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16. Ellie Goulding

Who: Ellie Goulding
What: Recording artist
Why she's an 'It' girl: Ellie has been on fire since day one. After her debut studio album debuted at number one, she performed her cover of Elton John's "Your Song" at the wedding reception of Prince William and Kate Middleton at Buckingham Palace. In 2015 she earned her first Grammy nomination for Best Pop Solo Performance. Additionally, Ellie is super philanthropic; she partnered with Pandora Radio where one dollar for each sale of her mixtape was donated to the Free the Children charity and performed with a charity group in London to raise money for the Ebola crisis in Africa.