K-pop's fashionistas have come together to celebrate with 'BALMAIN' designer Olivier Rousteing!

On April 25, photos of Jessica, B2ST's Junhyung, model Irene, Park Ji Hae, Lee Hae Seung, and more at the recent party were revealed. The event took place on April 21, where the celebrities flaunted their stylish looks and enjoyed one another's chic company. 

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Take a look at the fashionable party photos below!