Adam Lambert, Nick Hissom, Andrea Wynn, Steve Wynn, Katy Perry, Matthew Bellamy, Kate Hudson, Brian May at Botero

Katy Perry (R) and Brian May at Botero in Encore
After rocking at the iHeartRadio Music Festival Friday night, Katy Perry and Muse joined friends to celebrate with a dinner party followed by a night out (Pictured: Katy Perry (R) and Brian May at Botero – Photo credit: Danny Mahoney/XS nightclub)

Adam Lambert and friends
Adam Lambert and friends

Photo credit: Danny Mahoney/XS nightclub.

The group gathered at Botero, the steakhouse at Encore, with Katy making her appearance shortly after 12:30 a.m. The party enjoyed the Las Vegas evening with buffet dining on the patio. Adam Lambert, Queen guitarist Brian May, Kate Hudson, Matthew Bellamy and Nick Hissom were included in the group of 50 friends that joined in the celebration. Steve and Andrea Wynn also joined in the festivities.

Nick Hissom, Andrea Wynn, Steve Wynn, Katy Perry, Matthew Bellamy, Kate Hudson
Nick Hissom, Andrea Wynn, Steve Wynn, Katy Perry, Matthew Bellamy, Kate Hudson

Photo credit: Danny Mahoney/XS nightclub.

Following the lavish dinner, the group walked the short distance to XS nightclub where they continued the evening in three private cabanas overlooking the club. The group partied into the early morning hours.

Nick Hissom, Andrea Wynn, Steve Wynn, Katy Perry
Nick Hissom, Andrea Wynn, Steve Wynn, Katy Perry

Photo credit: Danny Mahoney/XS nightclub.