Ever wonder why Ariana Grande always rocks a ponytail on the red carpet? Or why Miley Cyrus is always photographed sticking her tongue out?

Some celebs are known for their quirky or unusual behavior when walking the red carpet. Since Kim Kardashian and Kanye West recently confessed why they don't smile often in photos (and it's for very different reasons!), we decided to uncover many of these myths.

Check out the gallery above to see surprising celebrity red carpet habits explained.