Is rihanna fat, skinny, or medium?

so me and my friends watched the rihanna's recent x-factor performance, the one wear she's wearing like a two piece outfit. I think she looks pretty good but I also think she's kinda thick, my friends also think she's a little on the bigger side. what do guys think? if you're girlfriend looked like that would you want her to lose a few pounds? Her thighs are a bit big to me but what do you all think? JUST GUYS please, I'm really trying to get a feel for what is considered "fat".

thanks!
Is rihanna fat, skinny, or medium?
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