But in all seriousness, and after looking at the picture 562 times, I say it's photoshopped. Looks like she's got Lana Kendrick's body all of a sudden and the head looks unnatural on the rest of the body. Also look at the right strap. Looks kinda wavy.
She could be shrugging a little, which pulls the shoulders up higher relative to the head and could absolutely cause that odd look. As for the strap... that top seems to have a very coarse pattern to the weave. That could certainly add to the sense of morphage when it's not stretched out.
However, it was PF posting it from their twitter. Photoshopping one of their top talents would seriously hurt a brand people are already critical of.
True... which is precisely why I hope it's legit. I mean, look at her last set on her website... She does seem to be a little bigger, both boobwise and bodywise. A few more pounds would make a huge difference in her body shape, especially her boobs.