An intimate gathering of A-listers, including Demi, Amanda, celebrity stylist Rachel Zoe, Kelly Preston, Joy Bryant, Michelle Trachtenberg and Jordana Brewster hung at a private home in Beverly Hills for the InStyle-hosted soiree.
Demi is the show's exectutive producer — so how did the actress fare on the other side of the camera?
"If she's on she's on; she's in," Amanda told E! Online. "She doesn't do things half-arsed. It was great to have her involved."