Jisoo officially turned 31 on January 3, 2026, and the celebration was full of love from her BLACKPINK sisters. The singer and actress is currently balancing preparations for the group’s upcoming comeback while also working on solo music projects. To mark her big day, Jennie, Rosé, and Lisa made sure fans felt the emotion, sharing heartfelt messages and unseen photos across social media.

Rosé was the first to post, dropping a midnight birthday wish with a cozy selfie from what looked like a relaxed tour moment. She called it “Happy Jisoo day” and told her eonnie she loved her, proving their sister energy. Jisoo reposted the message with a cute thank you and calling her Rosé her “number one girl,” in reference to her name. Next came Lisa, who shared a glamorous photo from the DEADLINE world tour era, calling Jisoo her “quick change” friend. Jisoo replied with a sweet message saying she missed her and loved her.
Jennie birthday post for Jisoo 🥰❤️
“My Chichu, happy birthday. Please keep being the one who makes me laugh. Let’s be happy in 2026 too, my Animal Crossing partner🤍” pic.twitter.com/4LRjSsoScu
— 𝑱𝑱 👯♀️ (@official_jensoo) January 3, 2026
Finally, Jennie joined the birthday love with a cute message expressing their close bond. The “Mantra” singer mentioned Animal Crossing gaming sessions and shared a rare backstage hug photo, affectionately calling her bandmate “Chi-soo.” With BLACKPINK gearing up for a new album in the coming months, Jisoo’s birthday felt like the perfect warm-up to the girl group’s worldwide takeover in 2026.