You might think you're the world's biggest fan of pop stars... but can you guess who each one is even if their faces are obscured by different emojis?

Yeah, not so easy now, is it?

Who's hiding behind a Santa face? Who's singing that duet? Who's emptying a basket of sweets into their handbag and who gets told off by Derek Zoolander for just doing her job?

What, you reckon you can solve this emoji-conundrum in record time? 

Watch the video now to play and good luck – It's harder than you think (unless you're some kind of face-spotting genius, that is).