Quite the star-studded bash!

Halle Berry kicked off her birthday by attending the Jennifer Klein annual Day of Indulgence event at a private residence in Brentwood over the weekend, and the actress left the party sipping tequila out of the bottle with a straw. Must have been a fun soiree!

Amy Adams also dropped by for some fun, and we couldn't help but notice that the redheaded beauty looked a little fuller in the tummy. Does she have a secret pregnancy she wants to tell us about? Speaking of babies, Ciara left infant daughter Sienna at home with daddy Russell Wilson for the day, and opted for a no-fuss casual look in a shirt dress and fuzzy slides.

Other celebs in attendance included Wonder Woman star Gal Gadot, Emmy Rossum, Rashida Jones, Chloe Grace Moretz, Katherine McPhee, Leslie Mann and Nina Dobrev.

We want to know what was in those goody bags!