Here is model Charlotte McKinney wearing a jean jacket over her bra with no shirt, a look stolen from fake Oh Henry! candy bar heiress Sue Ellen Mischke. It is not a fashion you often see because it takes an enormous amount of self-confidence to pull off.
McKinney is also looking off to her left in the picture, likely because something caught her eye. Perhaps it was a squirrel scurrying after a rogue acorn. Perhaps it was a meter maid informing an unfortunate driver she can’t stop writing a ticket once she starts. Perhaps it was member of the photo shoot team saying, “hey, look over here!”
Really hard to tell. Whatever it was, you can tell she’s very interested.