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Arlenis Sosa
Twitter: @arlenissosa
Instagram: realarlenissosa
Born and raised in the Dominican Republic, Sosa lived out every girl's Cinderella dreams (with Anna Wintour serving as her fairy godmother) when Wintour sent the model to the Met Gala with designer Oscar de la Renta just two weeks after arriving in New York. Having since walked the runway for designers like Zac Posen and Badgley Mischka, the Lancôme spokesmodel has also made it her mission to give back, founding the Arlenis Sosa Foundation in 2009 to help raise the awareness of and funds for juvenile diabetes in her home country.
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Freida Pinto
Twitter: @becauseimfreida
Instagram: freidapinto
Before making her on-screen debut in "Slumdog Millionaire," Pinto was a model in India, which might explain her knack for always getting it right when it comes to fashion. The actress recently attended the Chanel Cruise show in Dubai, and last Fashion Week, we spotted her front row at Michael Kors.
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Lupita Nyong'o
Twitter: @lupita_nyongo
Instagram: lupitanyongo
Now the face of Lancô, Nyong'o burst onto the fashion scene last award season with a string of red carpet hits from designers like Dior, Gucci and Ralph Lauren (culminating in a pale blue Prada gown fit for a princess when she won the Academy Award for her role in "12 Years a Slave"). Judging by last season's Fashion Week, we can look forward to seeing Nyong'o sitting front row with Anna Wintour at Calvin Klein in New York, or snapping selfies alongside Rihanna in Paris at Miu Miu, whose spring campaign she was featured in.
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Rihanna
Twitter: @rihanna
She may be a bad gal, but RiRi's edgy fashion and beauty experiments make bad look so good. When the Barbados-born superstar isn't busy topping the Billboard song charts, you can find her collaborating with M.A.C. (her RiRi Woo lipstick sold out in just three hours), winning a CFDA Fashion Icon Award or palling around with supermodels like Cara Delevingne and Joan Smalls after sitting front row at Chanel.
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Beyoncé
Twitter: @beyonce
Instagram: beyonce
Beyoncé has been influencing the world of fashion since her Destiny's Child days, and a quick glance at her Instagram now proves the world is her runway. The L'Oréal spokesmodel can currently be spotted wearing designs from Michael Costello and Riccardo Tisci of Givenchy on her On The Run tour, and she even featured fellow "It" girls of fashion, Jourdan Dunn, Joan Smalls and Chanel Iman in her recent music video Yoncé.
As fashion changes, getting bolder and more exciting every season, so too do the faces behind the biggest brands. Whether their muses are walking the runway or the red carpet, designers are clamoring after a new, more diverse set of faces with an impressive following of their own to model their clothes. From established trendsetters like Rihanna to fashion newcomers like Riley Montana, you can spot these jet-setting "It" girls working with fashion's biggest designers -- be it strutting the catwalk or sitting front row.