Jennifer Aniston has developed a more "f**k it" attitude as she has gotten older.

The 42-year-old actress - who is currently dating actor Justin Theroux - admits she worried more about how she would be judged in her twenties, but now has more "freedom" to enjoy herself.

She said: "I think getting older means you get more comfortable in your body and in your skin and who you are and you have more of a 'f**k it' attitude.

"You're so careful and controlled in your twenties and you're just more aware of your every move.

"Now, I think there's just more of a freedom and a comfort and none of it really matters as long as you're enjoying yourself and having a really good time."

Jennifer - who was previously married to Brad Pitt and has dated stars including Vince Vaughn and John Mayer - plays a man-eating dentist in new movie 'Horrible Bosses' and she admits she believes all guys are intimidated by "sexually confident" women.

She added in an interview with The Independent newspaper: "Are men intimidated by sexually confident women? Yes, I think men are intimidated by any woman who's sexually confident, no matter what age."