Kourtney Kardashian posted an Instagram nip slip on Sunday to much fanfare, including a comment from her ex, Scott Disick.

She showed just a touch of nipple, which means she probably took 30 pictures with the help of an assistant whose job it was to move her top a few centimeters. It's actually hard to tell if she's wearing a bra or a shirt, though they're pretty much the same thing when you're a Kardashian.

Sources: Instagram: Kourtney Kardashian | E!