London, Aug 19 - Hollywood star Ashton Kutcher left his mark on Las Vegas with a graffiti he spray-painted on the roof of a Sin City hotel.

Kutcher was in town with his actress wife Demi Moore to celebrate his step-daughter Rumer Willis' 21st birthday over the weekend. And the star made the most of his time in the gambling city by teaming up with German artist Nomad Sunday to 'tag' the roof of the Planet Hollywood Resort and Casino, reports buzzhollywood.com.

The pair painted a large white outline of a slot machine with the words 'Lucky Me' and they indeed proved lucky when the duo didn't get into trouble over the stunt, as they asked the hotel's owners for permission first.

Kutcher boasted of his achievement in a post on his Twitter.com homepage and told fans: 'Just tagged the roof of Planet Hollywood.'