Lisa Vanderpump hosted a luncheon at PUMP Lounge on Thursday, and in attendance were several of her Real Housewives of Beverly Hills co-stars.

Brandi Glanville Was Almost Invited To Lisa Vanderpump's Latest Event

In honor of the Hero Dog Awards, Vanderpump hosted the event, which welcomed the likes of Kyle Richards, Camille Grammer, Lisa Rinna and Erika Jayne, the newest addition to the Bravo reality show.

"With these beautiful ladies today @lisavanderpump 's event to help #stopyulinforever #comewalkwithusOct4th www.stopyulinforever.org #RHBH @kylerichards18 @therealcamille @lisarinna @theprettymess," Gretchen Rossi, formerly of The Real Housewives of Orange County, wrote on Instagram, along with the photo below.

Lisa Vanderpump Hangs With Lady Gaga At PUMP, Guests Receive Impromptu A Capella Performance

According to a Reality Tea report on Friday, the Hero Dog Awards Luncheon event was held to benefit the American Humane Association and Vanderpump Pets, as well as to put an end to the Yulin dog meat festival.

On Twitter, several other photos were shared, which featured a number of the Real Housewives.

To hear what Vanderpump and Grammer had to say about their troubled former co-star, Kim Richards, check out their interview with Perez Hilton below.