02/01/2013 10:09 am ET Updated Feb 01, 2013

Harry Styles Birthday: Lennon And Maisy Sing 'Happy Birthday' To One Direction Member (VIDEO)

February 1, 2013 marks a very important day for Directioners around the world: Today, singer Harry Styles turns 19!

Two of Harry's biggest fans are YouTube-turned-TV stars Lennon and Maisy, who recorded a special "Happy Birthday Harry" song for him yesterday. The adorable video (above) includes lyrics like, "Get as cheeky as you can get!" and a virtual hug from 8-year-old Maisy. The feeling, of course, is mutual: the 1D singer often tweets about how awesome he thinks the girls are.

Harry reportedly celebrated last night by partying with ex-girlfriends Caroline Flack and Cara Delevingne, and he also took to Twitter to share his feelings about the rite of passage:

In honor of Harry's big 1-9, we've collected 19 of our favorite photos of the singer in the slideshow. Click through them below, and tell us: Are you a Harry fan? What do you love most about the 1D member? Share your thoughts in the comments or tweet @HuffPostTeen!



Happy Birthday, Harry!