Yeah, Sara is a nicely thick and curvy cutie, with a very enjoyable chest. Judging by the wardrobe she's shown off in some ep's of the aforementioned sitcom, she indeed doesn't seem to be bashful about them either.
I'm also with Bob in noticing what appears in the image to be something like a surgical scar around that nipple, a la breast reduction surgery. Damn, I hope we're just imagining things; I've seen too many beautiful chests mutilated under the knife lately.