Credit: KKTNY on Facebook Photo: Young Rob in Drag

Rob Kardashian's not gonna be happy about this. The Sisters K posted a picture of little brother Rob on Facebook looking ... well, pretty girly.

"Introducing ... Roberta Kardashian! Sorry Rob LOL!" the caption reads.

In the photo, a very young Rob is wearing a floppy straw hat, a black off-the-shoulder dress, and pearls. And make-up! Clearly his sisters got their hands on him.

"Nice leg," one fan remarked.

We are seriously LOLing!

Source: Facebook