Birthday Cards for Sister-in-Law | Birthday & Greeting Cards by Davia

Amazing Sister & Friend – Happy Birthday Sister-in-Law Cards Send this Card
She might be the sister that knows you since you were small but both of you are close with each other. Appreciate her for being who she is with you. On her birthday, send her this ecard.
Fantastic Day– Happy Birthday Sister-in-Law Cards Send this Card
It's your sister-in-law's birthday and as one of her new bestie, you have volunteered to plan the best birthday celebration that she will ever have. After everything is set, send her this ecard to excite her even more!
For An Amazing Woman – Happy Birthday Sister-in-Law Cards Send this Card
An amazing birthday wish for that amazing sister-in-law of yours. You can't go wrong with this ecard. So, do think about it too much. Just choose this one and send it her way.
Blessed With A Lot – Happy Birthday Sister-in-Law Cards Send this Card
She is by far the coolest sister other than your own sister. She accepted you in the family with open arms. With her birthday coming up, it is time to plan a great celebration. Apart from all the festivities, send her a personal note with this ecard to leave a massive impact on her birthday.

Bright & Happy Day– Happy Birthday Sister-in-Law Cards Send this Card
This beautifully designed birthday wish is suitable for you to send to that sister-in-law of yours. The colourful balloons match her colourful personality. What are you waiting for? Press that send button now!
The Best One – Happy Birthday Sister-in-Law Cards Send this Card
This is a birthday ecard for that beautiful sister-in-law of yours. She has been one of your strong supporter and has welcomed you in the family with open arms. Take a moment to send this ecard to her to wish her all the best in her life on this birthday of hers.
Dreams Will Come True– Happy Birthday Sister-in-Law Cards Send this Card
Birthday celebration with your bestie is always great. It is greater when that bestie is your own sister-in-law. Plan a great day our for her and take this ecard as an invite to tease her of what's happening on that day.
A Blessed One – Happy Birthday Sister-in-Law Cards Send this Card
Her presence indirectly brings happiness to you. She is now among your bestest friend. On her birthday, celebrate her and treat her well. Don't forget to pass her this ecard too.

You Bring Happiness– Happy Birthday Sister-in-Law Cards Send this Card
She so kind to you. She welcomes you in the family and treat you like her immediate family. Time to show some appreciation by celebrating her upcoming birthday greatly. Make her smile at the start of her birthday by sending her this ecard.
Joy & Prosperity– Happy Birthday Sister-in-Law Cards Send this Card
Woohoo! Your sister-in-law's birthday is just around the corner and since both of you are basically best friend now, it is time to plan a huge celebration for her. Top it off with this sweet ecard too.
Energetic Balloons - Happy Birthday Card for Sister-in-Law Send this Card
Variety is the spice of life! If everybody was the exact same, things would be so dull! Send your amazing sister-in-law this balloon-filled birthday card for her special day! Its heartfelt message will reassure her of how appreciated her position in the family is! Her positive existence brings extra energy and enthusiasm to the family and you love her for it!
Bright Candles - Happy Birthday Card for Sister-in-Law Send this Card
Your sister-in-law is a warm person, a bright, shining beacon capable of leading others out of darkness. This birthday, consider sending her a cute, lit candle-festooned card that will assure her you have noticed her guiding light and have her back 100%! Wish her well with this bright candles birthday card done in soft greens, pretty pinks, youthful yellows and brilliant blues!

Indulgent Cake- Happy Birthday Card for Sister-in-Law Send this Card
Once again it is your wonderful sister-in-law's birthday and you want to play the celebrated role of Marie Antoinette! "Let them eat cake" you shout to the world by sending her this decadent layer cake birthday card! Tell her to cut loose and enjoy the day her own unique way with this explosion of presents, balloons, and stars over a pink background! Birthdays are for indulging after all!
Floating Balloons - Happy Birthday Card for Sister-in-Law Send this Card
There is grace and subtlety in simplicity. Better still, there is sincerity. Wish your sister-in-law a happy birthday sincerely, with these graceful floating balloons. The gentle pastel colors and uncluttered design express both love, and respect for the family we're awarded after a wedding. Choose to send this birthday card because your sister-in-law is an amazing human being who has earned an amazing birthday.
Mystery Gift - Happy Birthday Card for Sister-in-Law Send this Card
In-laws can be a quite the surprise. You may have chosen your own awesome partner, but their family can be an unknown. Often enough, they end up adding to your life and making it richer. On your sister-n-law's birthday, thank her for being a gift in your life that you didn't see coming, by sending the Mystery Gift Birthday Card.
Glitter Cake - Happy Birthday Card for Sister-in-Law Send this Card
Does your sister-in-law love glitter? How about the color pink? Is she something of a diva, or maybe just has a flair for the dramatic? If you answered "yes!" to any of those questions then you've just got to send her this glittery birthday cake card for her big day! She sparkles, she shines, and you need to celebrate her boldly!

Party Candles - Happy Birthday Card for Sister-in-Law Send this Card
Your entire family loves any excuse to gather together and party it up! When you gained a new sister-in-law your whole unit also got a brand new, yearly-occurring reason to throw yet another relatives shindig! Tell Mom to get baking, tell Uncle to bust out the video camera, and maybe Granny will make her famous potato salad! Let that good-livin' gal know how much she's appreciated in your circle by sending this party candles happy birthday card!
Precious Gifts - Happy Birthday Card for Sister-in-Law Send this Card
Which is more important: presents or presence? By sending this precious gifts happy birthday card to your cherished sister-in-law you will be letting her know how much her presence in the extended family means to you! She's a gift that keeps on giving and you want her to accumulate many more joyful memories with all of you! Keep the good times rolling!
Beloved Poem - Happy Birthday Card for Sister-in-Law Send this Card
Does your beautiful sister-in-law inspire you to poetry? Even if you aren't much of a poet yourself, or don't have any time on your hands to craft a sonnet, let us do the smooth-talking for you and simply hit send on this beloved poem happy birthday card! This little rhyme is sure to make her feel loved by, not only you, but the entire family!
Cheerful Puppy - Happy Birthday Card for Sister-in-Law Send this Card
Your sister-in-law is inarguably one fantastic woman! Her confident, playful spirit makes her the perfect adventure buddy. It just might put a big ol' grin over her chin and make her dog-gone happy to know you hope her birthday isn't too 'RUFF' with this happy puppy birthday card. She’ll definitely love this smiling party-hatted pup, no ifs, ands, or mutts!

Party Dog - Happy Birthday Card for Sister-in-Law Send this Card
Party Dog has spoken and we're good listeners. This bright eyed pup in his jaunty party hat is clearly an expert on fetching good times! He wants to tell your sister-in-law happy birthday, and thanks for being the person she is, so what are you waiting for? Send this card now! That wonderful human being deserves it and she shouldn't have to "beg" you to remember her birthday!
Awesome Kitten - Happy Birthday Card for Sister-in-Law Send this Card
Is your sister-in-law simply the best? The cat's meow, so to speak? Send her this adorable happy birthday card to wish her a wonderful day and let her know how awesome you think she is! Featuring an adorable blue-eyed kitten popping its head out of a pink, gift-wrapped package, this birthday card is guaranteed to make her day even more special!
Fun Confetti - Happy Birthday Card for Sister-in-Law Send this Card
Need an easy way to tell your favorite, hard-working sister-in-law to kick back and relax this birthday? Try sending this cute, colorful balloon and confetti birthday card as a simple reminder! The cheerful party decorations over the simple, pale blue background is guaranteed to make her sit back and take a load off. She does so much and she deserves a day off to soak up as much rest and fun as she can handle!
Proud Banner & Balloons - Happy Birthday Card for Sister-in-Law Send this Card
If popularity were an election, she'd win in a landslide of perfection! Hoist the balloons and string the banners, let us celebrate her charming manner! Whether she's your partner's sister, or your sibling's wife, you're glad your sister-in-law is in your life! Show her you're both proud and glad she's here to stay with this happy card on her birthday!

Sweet as Candy - Happy Birthday Card for Sister-in-Law Send this Card
To that cheerful, always polite, darling, dear, and such a treat Sister-in-law. Like candy on a holiday, she's a delight. The Sweet as Candy Birthday Card is for the Sister-in-law who is unflappably perky or unstoppably funny. Whether sour with snark, or tart with sass, sending this candy coated gem of a card is sure to be a sugar-spun blast!
Uplifting Balloons - Happy Birthday Card for Sister-in-Law Send this Card
Golden hued, cyan, and magenta, sparkling balloons light up this card like she lights up a room. Your sister-in-law is family you never knew you needed. Show them some love and gratitude on their birthday with balloons as uplifting and bright as they are! Because they are wonderful all year round, take the time to wish them a happy birthday.
Exploding Fireworks - Happy Birthday Card for Sister-in-Law Send this Card
Birthdays and fireworks, what a fun way to celebrate! Let your lovely sister-in-law know you remembered her big day by sending her this exciting happy birthday card covered in colorful, exploding fireworks! This greeting will have her bursting with excitement and feeling the familial love! Once she sees this birthday card she'll likely spend the rest of her special day glowing with happiness!
Bright Personality - Happy Birthday Card for Sister-in-Law Send this Card
Whether your sibling's partner, or your partner's sister, this person matters deeply to one of the most important people in your life. Take the time to reach out to this radiant entity and thank them for the love and support they have shown to the people you care about most. Let them know that their bright personality really lights up your shared family's life.

Pink Fireworks - Happy Birthday Card for Sister-in-Law Send this Card
There are so many jokes about bad in-laws that it only seems fair to sing their praises just as loud. The Pink Fireworks birthday card is the perfect way to thank your sister-in-law for all the warmth, pizazz, and radiance that they add to your life. Give that firecracker a birthday card that is as welcome a surprise as that first burst of a fireworks display.
Sparkle Happy Birthday Card for Sister-in-Law Send this Card
When you want to celebrate an awesome sister-in-law in the biggest & best way possible, this birthday card is definitely the way to go! A fun & festive background, filled with streamers, lights and gold sparklers, will put her in the mood to party, while your big, bold wishes in front will help her have the most fabulous day ever. After all, nobody deserves it more!
Wishing You Happiness - Happy Birthday Card for Sister-in-Law Send this Card
This birthday card for an amazing sister-in-law has "celebration" written all over it! From the bunches of balloons in the background to the big, bold words front & center, it's the best way to make her feel like she's floating on air all day long...and for a long time to come!
You are the Best Gift! Happy Birthday Card for Sister-in-Law Send this Card
It feels like a gift to have her as a sister-in-law. So when her birthday comes around, tell her how you feel with this thoughtful and beautiful birthday card. Two hands holding a bright purple present, wrapped up in a bow, are bringing lots of special wishes her way, while the lovely sentiment above will continue to fill her with love & happiness on her big day.

Have an Unforgettable Day! Happy Birthday Card for Sister-in-Law Send this Card
Your sister-in-law makes every day feel like a party, which is why she deserves a birthday card that's worthy of a celebration! A bottle of Champagne is lit up with brilliant sparklers, bringing fun & excitement to this fabulous & feminine pink greeting, which flaunts your best wishes for a day she'll never forget, full of presents and all the people she loves most!
Lovely Butterfly Happy Birthday Card for Sister-in-Law Send this Card
This lovely birthday card, featuring a big, bright butterfly, will send your sister-in-law's spirits soaring on her birthday! It's a thoughtful way to wish her joy and happiness as she celebrates this special day, while also letting her know that you're hoping her days ahead are filled with beauty and wonder.
Pink Tulip Happy Birthday Card for Sister-in-Law Send this Card
Your sister-in-law has so many wonderful qualities she shares every day, from a loving spirit to a kindness that radiates through everything she does. Let her know how happy you are to have her in your life with this beautiful birthday card, featuring a heart made of lovely flowers. With its sentimental words and rich colors, it's sure to fill her own heart with happiness while wishing her a day she'll always remember.
Sending Loving Thoughts! Happy Birthday Card for Sister-in-Law Send this Card
She may be family by marriage, but to you, she's just a close as your own sister. So on her birthday, let your sister-in-law know you're thinking of her and sending loving thoughts her way. A charming polka dot heart pick sticks out of a plant, which is just starting to sprout, a reminder that her own joy & happiness are sure to grow, today & each day that follows.

To my Wonderful Sister-in-Law - Happy Birthday Card Send this Card
She's someone who means the world to you, so on her birthday, make your sister-in-law feel extra special with this lovely birthday card to celebrate the beautiful, wonderful person she is. A shimmering purple heart is surrounded by delightful butterflies to bring a smile to her face. And your lovely words are sure to make her feel loved and remembered.
Heartfelt Happy Birthday Card for Sister-in-Law Send this Card
There's nothing sweeter on someone's birthday than making them feel happy. And this colorful birthday card is sure to have your sister-in-law feeling the love! A delicious purple cupcake, with bright candles sticking out all around, is a special treat to surprise her with. And what makes this birthday card even more special is your warm and heartfelt sentiment to such a wonderful family member.
Bright & Festive Happy Birthday Card for Sister-in-Law Send this Card
This bright and festive birthday card is a wonderful way to celebrate a special sister-in-law on her birthday! A colorful, candle-topped cake is waiting for her to make a wish, and it's joined by your own wishes for her, today and in the year ahead. What a sweet greeting to send when you want to make her smile and feel remembered.
Beautiful Bouquet Happy Birthday Card for Sister-in-Law Send this Card
A bright and cheerful bouquet of flowers graces the front of this birthday card for a special sister-in-law. Red lettering and red tones among the flowers in the bouquet contrast beautifully with the manila background of this birthday card. Any sister-in-law will be so pleased to receive this cheery and joyful birthday card on her birthday. You can't go wrong with this jaunty happy birthday card for your sister-in-law!

Birthday Cards for Sister-in-Law (44)