I will say this: based on my sample size of white women (about 75-100 moms from yoga or other mommy-type activities), they are all obsessed with being thin. They don't eat a lot during pregnancy & they eat even less after the baby is born.
It is unfortunate that they feel that way, but I'm sure many of them would consider Rihanna to be 'fat' and point out her saddle bags. They want their asses to be flat/small, whereas black women are proud of the booty.
Thankfully, I'm half-Colombian, half-Italian, so I have no choice but to like eating - it's in our culture.
I'm also thankful for the curves my madre blessed me with.