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Pharrell Williams is celebrating!

The 45-year-old “Happy” music star celebrated the worldwide launch of the CHANEL-Pharrell capsule collection at the Chanel Seoul flagship store opening at Daelim Warehouse on Thursday (March 28) in Seoul, Korea.

PHOTOS: Check out the latest pics of Pharrell Williams

Pharrell was joined by his wife Helen Lasichanh at the celebration, and also performed at the event.

BLACKPINK star Jennie performed her hit solo song “Solo” at the party as well, and was spotted hanging out and taking pictures with Pharrell.

Other stars at the event included model Soo-Joo Park, Jay Park, A Muse actress Kim Go-eun, model Irene Kim, Korean drama actor Lee Dong-wook, model and DJ Anna Kim and actresses Jung Ryeo-won and Go Ah-sung.

Fantastic Beasts star Claudia Kim, Miss Korea actress Lee Yeon-hee, singer and actress Yoona, models HoYeon Jung, Han Hye-jin, Jang Yoon-ju and Ji Hye Park partied the night away.

Kill Me, Heal Me actor Park Seo-joon and Signal star Lee Je-hoon joined Pharrell at the celebration, as did South Korean rapper BOBBY and hip-hop star Zion.T.

Girls’ Generation‘s new sub-unit, Girls’ Generation-Oh!GG, is making their big debut with a “Lil’ Touch”!

The five member sub-unit, consisting of Girls’ Generation members Taeyeon, Hyoyeon, Sunny, Yuri and YoonA, released their debut single on Wednesday (September 5).

PHOTOS: Check out the latest pics of Girls’ Generation

“I didn’t think that Oh!GG would actually become our name. I was taken aback at first, but there were a lot of people who said it was really catchy the more you hear it,” Hyoyeon admitted of their unit name during their reality show Girls For Rest.

The song was released along with another new track, called “Fermata.”

Watch the video for “Lil’ Touch” below!