Julia Roberts thinks she's too old for romantic comedy movies.

The 'Pretty Woman' actress - who has five-year-old twins Hazel and Phinnaeus and son Henry, three, with her cameraman husband Daniel Moder - admits she feels far too mature to portray a lovelorn character now she has turned 42.

She said: "I think I'm too old for those silly situations of unrequited love! It becomes less plausible when you're in the 40s to be walking down in the hallways because a boy walks by! I've read a couple lately that are more original and more mature, but they just didn't seem to fit for me."

Julia has had a very extensive acting career, with movies including 'Runaway Bride', 'Notting Hill' and 'The Mexican'.

However, Julia doesn't mind taking work at a slower pace now she is a mother.

She said: "I feel my reward for working 18 years before having kids is that I can take the time I need for my family between jobs.

"It's a great relief! You know, somebody asked me the other day and I said, 'God is great'. The world has been a gracious place for me as an actor and I can't explain any of it."