Heather Graham thinks she's funny.

The 43-year-old actress, who has starred in comedies such as 'Bowfinger' and 'Austin Powers', has always enjoyed starring in humorous films and found herself ''inspired'' after learning more about the industry.

She said: ''I think I'm funny, yes. I actually went and took improvisation classes. I've worked with a lot of comedians and I was like, I want to learn what they do because it's so fun.

''Taking the classes actually inspired me to write stuff. You realise you can say whatever you want and it gives you the freedom to just be yourself.''

Heather is set to reprise her role as Jade in 'The Hangover 3' alongside Zach Galifianakis, Bradley Cooper and Ed Helms and she is thrilled to have been invited back for the popular franchise.

She told Britain's OK! magazine: ''I was excited that they wanted me back. It's fun working with them and it's great to be a part of it - it's a funny movie that's taken on a crazy world of its own - it's a cultural moment in time.''