Katy Perry Celebrates The New Year With Private Vegas Concert

01/02/2014 04:59 pm 16:59:38 | Updated Jan 23, 2014
Didier Baverel via Getty Images

Katy Perry really was "Waking up in Vegas" this New Year's day.

The pop star performed a private concert at Las Vegas' Caesars Palace on Tuesday night for a group of invited guests. Costume designer Johnny Wujek was in the crowd and snapped this photo of Perry while she performed.

People reports that Perry put on an 80-minute show, which was a compilation of her greatest hits. After the concert, Perry and boyfriend, John Mayer, attended a private party at FIZZ Las Vegas.

Perry and Mayer have been in Vegas for nearly a week now. They saw Britney Spears' "Piece of Me" show, as well as a Fleetwood Mac concert, where Stevie Nicks dedicated the song "Landslide" to the "Roar" singer.

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