The saying "a smile is worth a thousand words" rings true for these pop stars, who are all up for PopCrush's 2013 Yearbook Superlative for Best Smile. All of the nominees have award-winning grins, but which one do you gravitate towards the most and find the most worthy of the Best Smile title?

We've obviously included some visual aids to help you in the voting process, which you can see by scrolling down a ways. You'll see Adam Levine's swoon-worthy, semi-mischievous grin, Beyonce's beaming smile, Bruno Mars' smooth smirk, and Chris Brown's huge, beautiful smile.

Some other nominees we've included are Demi Lovato, whose adorable smile is contagious, as well as the heart-melting grin of One Direction crooner Harry Styles. Big Time Rush member James Maslow has one of the finest sets of choppers and most perfect smiles we've ever seen, and the same can be said for Justin Bieber, who can cause legions of females to faint just from cracking that dazzling smile of his.

Closing things out are Lady Gaga's gorgeous and genuine grin, Lana Del Rey's buxom-lipped beam, Miley Cyrus' radiant smile, Nicki Minaj's wide and full-of-pride grin, Rihanna's stunning smile, and Selena Gomez's cute little grin.

Check out some pictures below and then vote for the star you think deserves the PopCrush Yearbook Superlative for Best Smile of 2013. You can vote once per hour until the poll closes on Friday, June 21 at 12PM ET. Good luck, and shine yo smiles, PopCrushers!

Jamie McCarthy, Getty Images
Jamie McCarthy, Getty Images
Jacob Andrzejczak, Getty Images
Michael Loccisano, Getty Images
Frazer Harrison, Getty Images
Danny Martindale, Getty Images
Dimitrios Kambouris, Getty Images
Theo Wargo, Getty Images
Jason Merritt, Getty Images
Stefanie Keenan, Getty Images
Jamie McCarthy, Getty Images
Frazer Harrison, Getty Images
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