No. It's not attractive, and it's not healthy for either sex.
As for my own personal tastes, I like a woman who looks like a woman. Not a 12 year old boy, a woman. That means CURVES. Hips. Something that screams femininity. A size 0 does none of those things. Obesity is not attractive, sure, but a woman should never be self-conscious of a paunch, or a handle. Femininity is beautiful, bottom line, and that's what drives guys crazy. Not dress size. Not cup size. It lies within the inherent, natural beauty of a woman.
I could really go on forever about this. I hate models, and "carbon copy" women. Have some individuality and embrace yourself for a change, damn it.