Happy Mother's Day Ecards for Sisters

Celebrate a dear sister who’s a great mom! Remind her how special she is to you and the entire family with an animated greeting filled with warm wishes, high praise and a special "Happy Mother's Day, Sis!" message from you to her. Blue Mountain members can personalize and send free Mother’s Day ecards for a sister. Join today and browse sweet, sentimental and funny Mother’s Day ecards for sisters.


As your sister, receiving praise and admiration from you on Mother’s Day will be extra meaningful — especially if you’re a mom, too. Not sure what to write in your Mother’s Day ecard? Here are some suggestions to help you craft a heartfelt "Happy Mother's Day!" message to your sister:

Give her a sister-to-sister shout-out:

  • You always wanted to be a mom … and no surprise! You’re wonderful at it.
  • Happy Mother’s Day to my sister and the best mom to my niece/nephew!
  • I admire your mom skills and learn from you all the time.
  • Your kids are pretty lucky having you for a mom ... I know I feel lucky having you for a sister! Happy Mother's Day
  • On Mother’s Day and always, I hope you know how much you mean to me, and what a wonderful sister and mom you are.
  • “A mother's hug lasts long after she lets go.” —Unknown
  • Hope this Mother’s Day brings you every reason to smile. Love you, Sis!

Celebrate the bond you share:

  • I’m so happy we’re moms and our kids will have a family that’s as close and loving as ours.
  • What a blessing I get to share the journey of motherhood with my sister and best friend.

Share a laugh about the realities of motherhood:

  • Here’s to a drama-free Mother’s Day filled with love. You deserve it.
  • In the roller coaster adventure of motherhood, I’m so glad we ride together.


Your sister may already have plans to celebrate her special day with her kids, but you can still send her happy Mother’s Day wishes from the comfort of home or on the go with the Blue Mountain ecards app. With a Blue Mountain subscription, have fun sending Mother’s Day for Sister ecards for FREE… in a few simple steps! Simply choose the perfect Mother’s Day card above, personalize with your sister’s name and a quick note written by her favorite sibling, and be ready to send in minutes via email, text, or social media. You can even schedule the delivery of your Mother’s Day card “For Sister” ahead of time or add a digital gift card to really make her day!

Join today to wish all your sisters a happy Mother's Day!