YoonA celebrated her birthday today and the Girls' Generation members got together to wish her a happy birthday!

YoonA turned 23 on May 30 (KST), and the girls threw a party complete with cake and champagne. Taeyeon posted photos onto her Instagram, writing, "YoonA, unni loves you a lot #happyYOONAsday". She posted a second photo of the party and wrote, "The 9 of us are always together. Girls' Generation can't do anything else ^^ It's just that I don't have good pictures."

Fans also celebrated her birthday on Twitter by trending a whopping 4  trends worldwide: #윤아야생일축하해 (YoonA, happy birthday), #happyYOONAsday,Happy Birthday Yoona, and #DEERYOONADAY.

Happy birthday to YoonA!