Demi Lovato and Katy Perry are facing off for the title of Hottest Star of 2014! Both ladies of pop had a year for the books, touring incessantly and enjoying the success of their smash-hit singles. Who deserves to be called Hottest Star of 2014? Cast your vote below!

Demi Lovato is hotter than hot in 2014! Not only did she beat out her fellow superstars to be crowned PopCrush Prom Queen of 2014 (for the second year in a row, we might add), she has also been super-busy on the music front, touring non-stop for her 2013 album 'Demi,' on both the Neon Lights Tour and soon-to-be the Demi Lovato World Tour, which will kick off this fall. Demi has also spent time promoting (and performing!) her new single, 'Really Don't Care,' feat. Cher Lloyd, while also collaborating with the Vamps on 'Somebody to You.' (And then there is that Ed Sheeran collab in the works…) Of course, Demi has still managed to find time to motivate and inspire her beloved Lovatics, and even announced the launch of her new fan club. Super exciting!

Katy Perry has had a whirlwind year herself, designing an accessories line for Claire's, dating (and then splitting from) John Mayer, and, of course, embarking on her Prismatic World Tour. Katy is still enjoying the fruits of her labor from her 2013 album, 'Prism' -- especially because 'Dark Horse' became her ninth No. 1 single this year, and her latest single, 'Birthday,' scored in the Top 20. (Plus, her prank-filled 'Birthday' music video is just downright hilarious.) 2014 proved that Katy Perry can't be stopped -- so Katy Cats, let's get to voting!

Which pop star deserves the title of Hottest Star of 2014? You can vote for Demi Lovato or Katy Perry once per hour until the poll closes at 12PM ET on Friday, June 27. The winner of this round will move on to face a different competitor in Round 2.