Sooyoung put on a special performance with her fellow Girls' Generation members at her birthday party!

Recently, Sooyoung celebrated her 28th birthday. On Instagram, the idol shared several photos from her birthday bash, where she's captured flashing a big smile wearing matching hoodies with Yuri, Seohyun, and Hyoyeon. 

내사랑들 Dress code #hoodies #beamingeffect2018

A post shared by sᴏᴏʏᴏᴜɴɢ ᴄʜᴏɪ (@hotsootuff) on Feb 11, 2018 at 12:26am PST

Stylist Seo Soo Kyung also shared moments from Sooyoung's birthday party on her personal account. The video showed the Girls' Generation members having fun to their debut track "Into the New World", while Sooyoung's boyfriend Jung Kyung Ho watched from the side with a big smile on his face. 

오랫만에 좋았다♡ 다시만난세계 뚜영이 happy birthday to you . #흐뭇한정경호 #눈앞에서보는소시공연 #좋았더라

A post shared by 서수경 스타일리스트 스타일디렉터 스타일마스터 (@soostyle83) on Feb 10, 2018 at 4:59pm PST

Sooyoung and Jung Kyung Ho revealed their relationship to the public in 2014. Many netizens are cheering on their relationship, commenting, "I hope they get married", "They are so wonderful together", "It's good to see Girls' Generation, and I'm rooting for Sooyoung and Jung Kyung Ho's beautiful love."