why? because she doesn't have the moles and freckles upton has? because her stomach to ass is perfect? because she's got perfect skin tone? if anything i bet she works out a lot more than Upton does...
People are full of shit, anyone who says that is secretly someone who would sell their mom to slavery to have a girl like that say hi to them.
If the question still stands, I'm pretty sure that's Alyssa Miller.
watching that video i just thought, in someways kate upton is a 40 year old in a 20 year olds body. the way she carries herself and doesn't care seems more like someone beyond her years. you know when women get to that age and they don't really care so much about making a fool of themselves in public? they are more interested in amusing themselves and their friends than trying to keep up some insecure/tight ass image.