You remember when your mum used to say "if the wind changes, you'll stay what way"? Well we're REALLY hoping that doesn't happen to these famous faces.
After THAT performance last year, it was inevitable that Ms Cyrus would make this list. We had a huge collection of funny faces, but the trademark tongue was the one that made the cut.
Mr Raymond has always been one of the most energetic performers, so we were bound to see some intense faces from the 'Scream' megastar.
We don't know what Robbie saw to make this face, but we bet it can't be un-seen. Poor Robbie...
They don't come much more feisty than our very own Mrs Fernandez-Versini. Not only did her surprise performance back in 2012 leave us gasping, we fell in love with her fierce face. It's the ultimate scowl for pulling serious shade.
Okay, we know he's a grown man and all, but we can't help but think of baby-faced Conor Maynard as a screaming kid when we see this picture. You know, like that time your mum wouldn't let you have any pick-and-mix.
Ellie Goulding has appeared at a few of our Balls now, but 2013 was the year she seriously rocked out - check out that hair going WILD during her killer headbang. We tried to recreate this, but we looked more like a dog sticking its head out of a car window... #fail
Of course it looks like he's yawning! What else could that POSSIBLY look like!?
There was some serious attitude on stage during Little Mix's 2014 #CapitalSTB set. After seeing THIS face, you can just imagine Perrie Edwards getting a bit gobby when she's bossing fiancé Zayn around. #GirlPower
Someone taken their shoes off? Cooked some kippers in the kitchen? Stood in some dog-do on the street? No matter what that stink is, Jennifer Lopez's face in 2011 is definitely appropriate when there's a mystery odour lingering.
No explanation needed, but this would look GREAT in a Snapchat selfie. Quack!
Forget Arnie. Forget Sylvester Stallone. Forget pretty much the whole of WWE. The Vamp's Bradley Simpson is the new macho man in our eyes. You show off those guns, Brad!
For those totes emosh moments you just get lost in a song and serenade your lover (or cat). Our favourite modern day Shakespeare with a guitar is the master of intense faces on stage.
Oh Connor Ball, you do know how to crack us up! We just HAD to include this face in our list but we can't decide what it reminds us of - a rabbit about to nibble on a carrot, or that annoying feeling when you're about to sneeze and your nose goes mental. Let's just combine the two and call it the Sneezing Rabbit. ACHOO!