Birthday Cards for Sister-in-Law (44)

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.
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.
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!
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.

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.
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!
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!
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!

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!
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.
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!
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!

Balloon (12)