1D Super Humans Facebook
Louis and his 1D pals, Harry Styles and Liam Payne, are seen in this photo celebrating Louis' big 2-1 with a birthday party last weekend.
We love the cake!
Since it's Christmas Eve and Louis' birthday, we can only imagine he's spending time with his family and girlfriend Eleanor Calder over the holidays.
If you want to send Louis a birthday card, check out this site to make your own personalized greeting. You can include photos and a special message--plus check out some of the other cards Louis got for his b'day.
Ahhhhh I'm 21 !!- Louis Tomlinson (@Louis_Tomlinson) December 24, 2012
IT'S MY BIRTHDAYYYYY AHHHHH- Louis Tomlinson (@Louis_Tomlinson) December 24, 2012
Massive HAPPY BIRTHDAY to one of my best friends @louis_tomlinson 21 today! Have a great time buddie and I will see you in the new year!- Niall Horan (@NiallOfficial) December 24, 2012
Happy birthday @louis_tomlinson, love ya bro!!!- zaynmalik1D (@zaynmalik) December 24, 2012
To celebrate Louis' big day, we're sharing some fun pics of Louis in the photo gallery below--check them out!