Celebrity Spotting: Katy Perry, Muse, Adam Lambert and More Party at Botero and XS

After rocking at the iHeartRadio Music Festival on Friday night, Katy Perry and Muse joined friends to celebrate with a dinner party followed by a night out.

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

Following the lavish dinner, the group hit XS Nightclub, where they continued the evening in three private cabanas overlooking the club.

Click on the photos below to enlarge.

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