Gwen Stefani, Hilary Duff and Rachel Zoe hung out together at the Established Jewelry By Nikki Erwin Launch Party in West Hollywood Thursday.

Established Jewelry Launch Party

Erin Foster and Sara Foster hosted the launch party for rising designer Erwin’s jewelry line. Erwin, who previously worked for Tobey Maguire‘s wife Jennifer Meyer, calls her Established line “edgy and sexy,” adding, “I just had an influx of creativity and I express myself in my jewelry,” according to The Hollywood Reporter.

“I couldn’t be happier for Nikki,” Meyer told THR of her former employee, who also designs Donatienne handbags. “She has always had a brilliant eye which shines through in both her bags and now her jewelry. I’m always flattered when Nikki comes to me for advice, but from the looks of her new pieces I have a feeling she is going to be hugely successful!”

In addition to Stefani, Duff and Zoe, Demi Moore and her daughter Tallulah Willis were in attendance, as was Pretty Little Liars actress Ashley Benson, with whom designer Zoe posed with for an Instagram snap.

“I get by with a little help from my friends..when I really need them most a snuggle with @sjmeyer02 @jenmeyerjewelry@heather_parry @itsashbenzo goes a long way ❤️❤️#greatfriends #brutalday #bestcurexoRZ”

A photo posted by Rachel Zoe (@rachelzoe) on Mar 6, 2015 at 9:05am PST