Chace Crawford[Photo/Agencies]

Chace Crawford has been put off fatherhood after starring in 'What To Expect When You're Expecting'.

In the film, the actor's alter-ego Marco learns he is to become a dad after accidentally getting a girl pregnant and Chace admits the storyline has taught him he's not ready for children at the moment.

When asked if the movie had put him off babies, Chace said: "Yeah, absolutely 100 per cent. It is a bit like birth control. I've kind of like left the same way I came in."

"I've also learnt to wear a condom. At some point, if you're not planning an unexpected pregnancy. That's kind of the theme of my storyline."

Chace also revealed how he loved working alongside love interest Anna Kendrick in the movie as they had so much fun together.

Speaking at the UK premiere of 'What To Expect When You're Expecting' at the BFI IMAX at London's South Bank, Chace told BANG Showbiz: "She was great. I didn't work with anyone else but her. We play rival food truck artists. We used to know each other in high school you find out. The old classic tale of two hooched up workers who make the friendly wager and next think you know we're rolling around on top of a car and people are pregnant - hey!

"Things got a bit rough on the hood of that car. I don't even like her, I hate her. No, she's phenomenal, we had a funny time filming. It looks all smooth and the whole thing looks romantic but we're really trying not to laugh."

Anna was also at the premiere as was Cameron Diaz, Matthew Morrison and Cheryl Cole.

'What To Expect When You're Expecting' is out on Friday (25.05.12)