Actor Charlie Sheen is set to make an appearance at the MTV Movie Awards 2012 Sunday where he will pay tribute to party films and also announce the musical act ‘Wiz Khalifa’.

The former Two and a Half Men star was recently arrested for the possession of marijuana.

“Even though Charlie has cleaned up his act, he still has a sense of humour about his out-of-control days,” E! News quoted a source as saying.

“It’s all going to be a really big party moment,” another source added.

The bash, which will be hosted by comedian Russel Brand, will have Kristen Stewart present a section with her Snow White and the Huntsman co-star Chris Hemsworth. >>Source: IANS