Katy Perry Makes First Post-Split Red Carpet Appearance!

Katy Perry stepped out in Las Vegas Friday night, marking her first red carpet appearance since splitting from husband Russell Brand.

Katy and her jewelry designer BFF Markus Molinari hosted the GiveLove charity bash at 1OAK nighclub.

Back from touring in Asia and donning blue hair, Katy was joined by her brother, actor David Hudson, as well as GiveLove co-founders Patricia Arquette and Rosetta Getty.

Katy wore a a McQ dress, Alexander McQueen shoes and J. Molinari jewels.