London:  Michelle Williams, who recently picked up a Golden Globe and Bafta nomination for her role of Marilyn Monroe in 'My Week with Marilyn', thinks that being sexy can be negative.

The 31-year-old, who delivers a stunning performance as Monroe in her new film, said that her first role as naughty teenager Jen Lindley in Dawson's Creek made her realise that being sexy can be negative, reported a leading daily.

"I wouldn't say that that would be one of my first qualities as a human being – being sexy. And I think because my character on Dawson's Creek was sexy... sexualized... sexual... I saw all the negative attention and connotations that can come along with that. And that those things can keep people from seeing you clearly, Williams said.

"When you play sexy you're kind of playing just for men. That is something you have to police and turn it on its head. I mean, sexuality has been a part of my work, obviously but it's never been sexy. It hasn't been beautiful," Williams said.

The mother of one also said she always wanted a younger brother or sister for Matilda – the daughter she had with Heath Ledger before he died in 2008.

"I really wanted, and I really expected or imagined, that Matilda would have siblings that were close to her age. I wanted that for her. But I couldn't make that happen.

"And now that she's 6 that isn't even a possibility anymore. So something that was making me feel impatient, that's been removed. For whatever reason, that's not our luck, or our path."