This latest conspiracy against Palin is ridiculous and if the target were a liberal politician 'feminists' would be screaming at the top of their lungs about this. Palin is naturally well endowed but usually wears less revealing cloths to prevent objectification since she seems to be unable to rely on those 'feminists'. People should focus on countering her ideas if they disagree with them, not commenting on her appearance.
Pictures embedded below.
However, detailed analysis reveals that, from some angles at the Belmont, the breasts didn't look quite so huge: