I've become really good at telling a ham using angles from an actual hot woman using angles.  For that profile picture, what gives it away is how high her cleavage goes (wayyy up to nearly her neck.  Normal sized women, even normal sized women with really large breasts, don't have cleavage like that.) along with her lack of collar bones and neck definition. What little you can see of her shoulders also seems to be very round and lacking definition.