Brighten your sister's day! Show your sister how much she means with these warm card wishes.

1. Sweet & Loving Messages

"To my beautiful sister: thank you for being my confidante, my advisor, and my best friend. Happy Birthday!"

2. Funny Sibling Teasing Quotes

"Happy Birthday to my sister! Thank you for making sure Mom and Dad spent all their strictness on you first!"

3. Short Card Wishes

"Happy Birthday to the sweetest sister in the world! Hugs, smiles, and endless love to you today!"