Jennifer AnistonJennifer Aniston has a famous head of hair -- but you'd be surprised at what she thinks of her most copied coif.

"Have there been disasters? I think that's a very relative term with hair. Let's say there have been moments I'd rather not relive, like that whole Rachel thing," she tells Allure of the 'Friends' 'do that started it all.

"I love Chris [McMillan, her hairstylist], and he's the bane of my existence at the same time because he started that damn Rachel, which was not my best look. How do I say this? I think it was the ugliest haircut I've ever seen. What I really want to know is, how did that thing have legs? Let's just say I'm not a fan of short, layered cuts on me personally, so I don't love revisiting that particular era," she adds.

The A-lister also has another well known asset: her bikini bod. And she works hard to keep it in shape.

"My stomach is not my hardest [challenge] -- my derriere is much more my challenge," she explains.