So many celebrities flocked to Jennifer Klein's house in Brentwood, Calif., to attend an event — and the outfits were on point!
Nicole Scherzinger, Julianne Hough and more looked gorgeous while in the California sun.
Jennifer Lopez was also spotted at the annual event with her daughter, Emme — and apparently, the pop star even got Ben Affleck's daughters, Seraphina and Violet, a present!
"When she stopped by the Made by Mary jewelry station, she and Emme picked out several 'birth flower necklaces,' including two for Ben's daughters," a guest told PEOPLE.
"Jennifer started this over 15 years ago and it has always been the one thing in the summer to look forward to," Debra Messing told InStyle. "We joke because my birthday is August 15th and it's always the Sunday before it, so she always says, 'Your birthday party's coming up.' We like to pretend it's my birthday party. But really, it's just a really great women's day, not feeling like we have to be fancy, not feeling like you have to dress up for anybody. And I just keep saying, 'Same time next year!'"
Scroll through the gallery below to see the shots!
Olivia Rodrigo wore a mask as she walked in with her friend. The singer also wore a funky top with a black skirt and black pants.
Alexandra Daddario sported a white long-sleeve shirt with black pants and black shoes.
Christina Hendricks turned heads in a floral top and black pants, which she paired with a tiny heel.
The singer rocked a bright red floral gown.
Cobie Smulders looked casual in a patterned top with jeans and tiny heels.
Jordana Brewster looked adorable in a polka dot dress.
The DWTS alum looked radiant in a floral dress with heels.
Tyra Banks was dressed down in black leggings, kicks and a black T-shirt.
Meanwhile, Kathryn Hahn looked amazing in a patterned jumpsuit.
Miranda Cosgrove sported a floral dress with cute shoes.
Melissa Benoist — who wore jeans and a white top — had her hands full as she walked out from the event!
Is that you, Laverne Cox? The actress covered her face with a mask while waiting outside.