14/08/2014 12:38 BST | Updated 22/05/2015 06:12 BST

Miley Cyrus And Katy Perry Head To Las Vegas For Britney Spears Show

It's the show everyone has been talking about. So, of course, some celebs were bound to show up when Britney Spears performed her first show of her two-year stint in Vegas.

But what do you wear to a pretty cool concert - Britney's Piece of Me show? Hmmm, it's a difficult question. Katy Perry opted for what can only be described as a fairly odd and shiny American football shirt thing. She combined her top with a tutu and some knee high socks.

Katy Perry

Wrecking Ball singer Miley Cyrus on the other hand went for a revealing little ensemble (what else would we expect?!) If that skirt was any higher it would have been x-rated.

Miley Cyrus

Mario Lopez, of Saved by the Bell fame (and the American version of the X Factor), was also at the show, as well as actress Ivana Millicevic who was looking pretty fab in a monochrome ensemble. She pitched up in a white top with a high-waisted black leather skirt.

Ivana Milicevic

After the big performance, Brits tweeted to say how amazing the show was and included a sneaky peek of one of her outfits.