Say Cheese: Picture Perfect Smiles on Instagram

Stars show off their pearly whites on World Smile Day.

Beyoncé @beyonce - Beyoncé's smile is relaxing and content, a much different look from her animated facial expressions on stage.By: Jazmine A. Ortiz(Photo: Beyonce via Instagram)

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Beyoncé @beyonce - Beyoncé's smile is relaxing and content, a much different look from her animated facial expressions on stage.By: Jazmine A. Ortiz(Photo: Beyonce via Instagram)

Usher @howuseeit - You can tell from Usher's grin that he was absolutely thrilled to be part of the judges panel on last season's The Voice. (Photo: Usher via Instagram)

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Usher @howuseeit - You can tell from Usher's grin that he was absolutely thrilled to be part of the judges panel on last season's The Voice. (Photo: Usher via Instagram)

Photo By Photo: Usher via Instagram

Trey Songz @treysongz - One flash of Trey Songz's super sexy smile will have all the ladies having heart attacks.(Photo: Trey Songz via Instagram)

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Trey Songz @treysongz - One flash of Trey Songz's super sexy smile will have all the ladies having heart attacks.(Photo: Trey Songz via Instagram)

Photo By Photo: Trey Songz via Instagram

T.I. @troubleman31 - Money stacks make T.I.'s smile stretch from ear to ear.(Photo: T.I. via Instagram)

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T.I. @troubleman31 - Money stacks make T.I.'s smile stretch from ear to ear.(Photo: T.I. via Instagram)

Photo By Photo: T.I. via Instagram

Robin Thicke @robinthicke - Robin Thicke shows some teeth after winning a moon man at this year's VMA's.(Photo: Robin Thicke via Instagram)

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Robin Thicke @robinthicke - Robin Thicke shows some teeth after winning a moon man at this year's VMA's.(Photo: Robin Thicke via Instagram)

Photo By Photo: Robin Thicke via Instagram

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Rihanna @badgalriri - Edgy singer Rihanna shows us a softer side with her sweet, subtle smirk.  (Photo: Rihanna via Instagram)

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Rihanna @badgalriri - Edgy singer Rihanna shows us a softer side with her sweet, subtle smirk.  (Photo: Rihanna via Instagram)

Elle Varner @ellevarner - Summer is right around the corner and this cutie is ready. Elle Varner looks absolutely radiant! (Photo: Instagram via ellevarner)

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Elle Varner @ellevarner -  Elle's gorgeous smile will brighten anyone's day.(Photo: Instagram via ellevarner)

Photo By Photo: Instagram via ellevarner

Omarion @omarion1 - Even though Omarion is part of Rick Ross' MMG label, he's not putting on a tough face.(Photo: Omarion via Instagram)

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Omarion @omarion1 - Even though Omarion is part of Rick Ross' MMG label, he's not putting on a tough face.(Photo: Omarion via Instagram)

Nicki Minaj @nickiminaj - Nicki is beaming with side boob, a knockout combination.(Photo: Nicki Minaj via Instagram)

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Nicki Minaj @nickiminaj - Nicki is beaming with side boob, a knockout combination.(Photo: Nicki Minaj via Instagram)

Jason Derulo @jasonderulo - One look at Jason's pearly whites had Jordin Sparks hooked.(Photo: Jason Derulo via Instagram)

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Jason Derulo @jasonderulo - One look at Jason's pearly whites had Jordin Sparks hooked.(Photo: Jason Derulo via Instagram)

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Ciara @ciara - Ciara is glowing while riding around passenger side.(Photo: Ciara via Instagram)

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Ciara @ciara - Ciara is glowing while riding around passenger side.(Photo: Ciara via Instagram)

Big Sean @bigsean - Big Sean doesn't like to do everything big, so he gives his followers an understated smirk.(Photo: Big Sean via Instagram)

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Big Sean @bigsean - Big Sean doesn't like to do everything big, so he gives his followers an understated smirk.(Photo: Big Sean via Instagram)

Mariah Carey @mariahcarey - American Idol judge Mariah Carey made headlines for shutting down Disneyland to celebrate her 5th wedding anniversary. Here the veteran songbird takes a ride on the merry-go-round. (Photo: Mariah Carey via Instagram)

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Mariah Carey @mariahcarey - Princess Mariah Carey gives us a grin fit for royalty.(Photo: Mariah Carey via Instagram)

Photo By Photo: Mariah Carey via Instagram

Azealia Banks @azealiabanks - Azealia Banks is all smiles for her followers in this selfie.(Photo: Azealia Banks via Instagram)

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Azealia Banks @azealiabanks - Azealia Banks is all smiles for her followers in this selfie.(Photo: Azealia Banks via Instagram)

Iggy Azalea @thenewclassic - This Iggy Azalea smile looks classic in black and white.(Photo: Iggy Azalea via Instagram)

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Iggy Azalea @thenewclassic - This Iggy Azalea smile looks classic in black and white.(Photo: Iggy Azalea via Instagram)