No. 7: Megan Nicole, ‘Mistletoe’
Just because it's no longer the holiday season doesn't mean that we can't show some love to YouTube sensation Megan Nicole, who has become one of the top stars to emerge from the YouTube age. Her clip for 'Mistletoe' shows her jamming out by a Christmas tree with some cute accoutrements (Hello Kitty slippers, anyone?) and jamming out with a pal.