You mean the "jack skellington look".. I think it's "in" because there were/are idiot guys out there in large numbers that considered Scarlett Johansson and Lindsey Lohan (earlier in her career) fat..
She looks ugly and boney like Ann Coulter now, just a little joke. It's like if somebody posted a picture of Marlon Brando on the set of The Score and somebody would chime in with "I didn't know Jabba the Hut was still working."