The star has no problems with her body, but she admits there was much more of it when she was a teen - before she had to lose weight to fit intoTinseltown.
She says, "I'm fine, I'm happy (but) I looked way better when I was 15. I had beautiful, huge breasts and then I came to Hollywood and I was like, 'I gotta lose weight, I gotta look thin and fit,' and I lost them a little bit.
"I don't miss them because they were quite uncomfortable but they looked beautiful. I was feminine, I had some nice curves and I think we should really appreciate that, as opposed to try and get rid of everything all the time.
"I lost, like, 10 pounds but that's a lot on my tiny frame... That's what happens when you try to lose weight; it all comes out of the wrong place."
However, Seyfried, 27, still likes to bare all when she is with that special someone.
She tells U.S. chat show host Ellen DeGeneres, "At this point in my life I do (feel like I look good naked) because... it doesn't matter any more. When you're young you don't appreciate it and I feel like everybody that's a bit older wishes they appreciated it when they were young."