Billie Eilish, Paris Jackson, & More Stars Attend Kaia Gerber's 21st Birthday Party!

The stars are stepping out for Kaia Gerber‘s birthday party!

Billie Eilish and brother Finneas stopped by the nightclub Offsunset for the model’s 21st birthday party on Saturday night (September 3) in Hollywood, Calif.

PHOTOS: Check out the latest pics of Billie Eilish

Other stars in attendance included Kaia‘s older brother Presley Gerber, Camila Morrone, Evan Ross, singer Madison Beer, and rapper Roddy Ricch.

Kaia‘s birthday party is one of the first times Camila, 25, has been spotted out since it was reported earlier this week that she and boyfriend Leonardo DiCaprio had broken up after four years of dating.

Shortly after the news broke, a source revealed the rumored reason why the two split.

Click through the gallery inside for 20+ pictures of the stars stepping out for Kaia Gerber’s birthday party…