From Ariana Grande's infectious hit 'Problem' to Taylor Swift's sophisticated style to Lucy Hale's debut in country music, the summer of 2014 is one to go down in pop culture history! (Seriously, who could forget 5 Seconds of Summer's nostalgic 'Amnesia' video or One Direction's bombastic Where We Are Tour?) We want you, the fans, to weigh in on the best and biggest stuff that happened during the summer of 2014, from the best song to the hottest style.

Scroll down to check out all of our categories and nominees, which include One Direction, Selena GomezJustin BieberDemi Lovato, Lucy Hale, Ariana Grande and Taylor Swift (among many, many more). You can vote in each Best of Summer 2014 poll once per hour until Sept. 7 at 9AM ET. We will announce the fan-voted winners later that day!

See Photos of Best of Summer 2014 Nominees!