Credit: Jason Kempin/Getty Images Photo: Hit: Amanda Seyfried at the 2013 Screen Actors Guild Awards

Being thin and having big boobs do not often go together. (Which is why L.A. has the cliche of the super-thin women with big fake boobs weighing them down — it's rare to have both naturally.)

Amanda Seyfried, 27, is one of the rare starlets to have natural curves on a slender body — she's like a Barbie doll come to life — but she used to have even more curves, like back in 2004 when she was in Mean Girls. Amanda talked to Allure about how her large breast size was a source of insecurity when she was a teen.

"I saw a picture of them a couple of days ago from when I was 19, and my boobs were way bigger. They were a D, and now they're a small C, because I lost weight. There was something so beautiful about the size of them. When I look back, I'm like, 'Why did I always give myself such a hard time?' Nobody gave me sh-t about it except me.'"

We're always hardest on ourselves. There are worse problems than to be top-heavy, but it's still an issue for Amanda, even with a smaller top. She said her breasts can still get in the way a lot and she has to wear a small, tight sports bra when she goes running or her boobs will smack her chin! That is one of the downsides of being curvy. Would you rather have curves up top or a tight body that doesn’t bounce when you exercise? The deep questions in life!

Sources: Us Weekly, Allure