Renee Zellweger insists turning 40 hasn't affected her career.

The 'Cold Mountain' star — who celebrated the landmark birthday in April — believes her quirky appearance will always land her roles, regardless of her age.

Asked if she had noticed more exciting parts drying up, she said: "It's so hard to comment because I don't see it. I don't know. I'm so spoiled with respect to the experiences I've had and the opportunities I've had that I don't see it.

"I've never been that girl who is dependant on how fabulous my hair is or my stature or that I look good in order to work. So I don't really think about it in those terms."

The actress insists the only bad thing about turning 40 is that people are expecting her to feel differently about life.

She explained: "I'm so sad that everyone keeps pointing to this birthday: 'You had this birthday, how do you feel now?' I'm thinking, 'I feel nothing different.'"