Britney Spears Calls Mystery Celebrity As A ‘Piece Of S***’ Britney Spears took to Instagram on Sunday with a scathing post about a celebrity she dubbed “a piece of sh_t.” The post comes days after her sister said she wanted to be known for more than “Britney’s little sister.” Britney posted a painting of a dark-haired woman wearing sunglasses with the caption: “SUP BIRDS !!! Come on bi__h, clap back at me for two minutes … My own party !!! Smartest one … VERY GOOD !!! You’re such a classy famous person you piece of sh_t … I finally said it !!! Shade!!! I’m only human … what can I say F__K YOU !!!” Fans took to the comments saying that Britney had “lost it,” and they were confused by her post that didn’t name who she was talking about. Who do you think Britney was talking about in her post?