Anne Hathaway has shown she is a fan of Hollywood and TV fancy dress after a video was put on Twitter of her wearing an outfit from the movie Grease.
The actress was clearly taking over the role of Sandy in the image as she was wearing Olivia Newton John's famous skin-tight black trousers and top.
She even had her big frizzy hair do to match in order to fully embrace the dressing up experience.
James Franco put the video on Twitter and he can be seen showing off his muscles in his 'Danny' outfit, complete with 1950s quiff.
The 127 Hours star is co-hosting this Sunday's (February 27th 2011) Academy Awards with Hathaway so it is likely he released the clip to further fuel the excitement about the forthcoming ceremony.
There are going to be loads of celebrities putting on fun fancy dress this weekend to attend the event, such as Black Swan star Natalie Portman who is up for the best actress award.