Rumer Willis 'is thankful for Twitter'

Rumer Willis has revealed that she is thankful for Twitter for allowing her to express herself.

The daughter of Bruce Willis and Demi Moore insisted that the micro-blogging website gives her and other celebrities an "outlet" to control their public image.

The 90210 star told Prestige: "Everyone has an opinion, and if they say something negative, you can't defend yourself because any response in itself is enough to validate the claim.

"But that's the great thing about outlets like Twitter because, more and more, we're getting control of our image. We can be in direct contact with the world and people can at least choose between second-hand and the direct information."

However, Willis admitted that she is still conscious of how she behaves.

She explained: "You have to be a little more aware of how you present yourself in public places. I mean, I can't walk into Starbucks anymore in my pyjama pants."