Sunday night gloom? Yeah, we feel you. But — good news — we've figured out a surefire way to cure your back-to-work blues: the week's best celebrity LOLz. Think: Ed Sheeran's impersonation of the world's most famous DJ, the internet's reaction to Rihanna's CFDA Fashion Awards dress, and someone selling Kanye West's stained T-shirt (for, like, hundreds of pounds).