No, I'm not fat.
I'm 5'10" and a solid size 10 (which basically means anything from an 8 to a 12, depending on the shop).
Although I am not skinny and don't exactly look amazing naked (I've had two kids), I am really happy with the way I look clothed.
It's not OK to say this, though. It's barely OK to say it on an anonymous forum, and if I were to say it in real life, it would get people's backs up, as if I have tickets on myself, so I would never admit I was generally pretty happy with my body shape to other woman.
Likewise, it's also not OK for slim women to find fault with their bodies, because that's tedious in the extreme, too.
We have such a fucked up situation going on, really.
The best I can hope for is, is that my 3YO DD picks up on the fact that I'm satisfied with my body, and confident within it. I definitely come out and tell her how lucky she is, that's she's going to be tall (taller than me, at the rate she's going). I absolutely want to instill body confidence in her at the earliest stage.