Melissa McCarthy
"A genuine Smile from a Genuine Women. @MelissaMcCarthy gets my vote for tonight's Best Smile," wrote celebrity stylist Johnny Wujek on Twitter.
Stana Katic
Makeup artist Tina Turnbow awarded the Castle star best smile of the night. "Shimmer on the eye & sparkle in the smile," Tina wrote on Twitter.
Katharine McPhee
Beauty blogger Nashelly Messina is a big fan of Katharine's smile.
Jillian Rose Reed
Those pearly whites are anything but Awkward.
Viola Davis
The Suicide Squad star was all smiles after winning Favorite Actress.
Adrian Grenier
We'd join any entourage that included that charming grin.
Lady Antebellum
This musical trio is all smiles...even if band member Charles Kelley experienced a wardrobe malfunction.
Ellen DeGeneres
All white, all white, all white...and we're not just talking about her outfit. Hairstylist Laini Reeves was a fan of Ellen's beaming grin.
Olivia Munn
That smile is picture perfect.
Allison Janney
Is the People's Choice Awards co-host rocking a nervous smile on the red carpet? We think not.
Kevin Hart
The Wedding Ringer star's smile is infectious. His triple selfie stick? Genius!
Gabrielle Union
Marie Claire Senior Fashion Editor Zanna Roberts Rassi thought Gabrielle's "megawatt smile was unforgettable," she said. While Alicia Quarles noted how Gabrielle was "completely confident and happy in her magenta plunging Honor dress. She is one newlywed who is beamin'," Alicia added.
Not to mention, "she has the most beautiful smile and amazing white teeth!" makeup artist Ashley Rebecca concluded.