Congrats to Lady Gaga, who won! Read more about here.

This has been a huge year for Demi Lovato and Lady Gaga, but only one of them can take home the title of Hottest Female Star of 2013! Who will you pick?

Demi Lovato hasn't slowed down this year. The singer judged the 'X Factor,' dropped her self-titled album, announced she's writing an inspirational book and will appear in the upcoming season of 'Glee.' Whew! She's also not afraid to show us her natural side, sharing fresh-faced selfies on Twitter now and then.

Lady Gaga, on the other hand, returned to the pop music scene with a bang! Mother Monster dropped her new track, 'Applause,' and dramatically opened the MTV VMAs -- all in her traditional avant-garde ensembles, natch. Let's not forget the numerous edgy photo shoots she's done! Gaga is poised to be the biggest pop star of the year.

Who do you think is the hottest female star of 2013: Demi Lovato or Lady Gaga? You can vote once an hour until polls close Sept. 30 at 2 PM ET.

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