Katy Perry debuts blue hair in first appearance since split

Katy Perry has stepped out for her first public appearance since her split with husband Russell Brand.

The 'One That Got Away' singer was in Las Vegas on Friday, January 27 to lend her support to GiveLove.org, a charitable organisation that helps to develop temporary housing and improve sanitation in Haiti.

Perry was all smiles on the red carpet with designer Markus Molinari as she showed off her new blue hair while wearing a short black dress.

Rex Features / MediaPunch/Rex Features

However, a source claimed to am New York that Perry "pretty much sat in the same spot the whole night" once at the event.

"She just sipped on one drink and seemed to be having a really mellow night," the source added.

Last month, Brand filed for divorce from Perry, citing "irreconcilable differences".

Perry recently revealed that her heart was "happy again" because of the love and support she received from people all over the world after the split.

Watch the music video to Katy Perry's 'The One That Got Away' below: