Britney thanked fans for wishing her a very Happy Birthday and celebrated with a little cake! Did you send her a birthday message on Twitter?

Thank u so much for all ur birthday wishes! They mean so much to me!!! Xo!

— Britney Spears (@britneyspears) December 2, 2013

Amazing birthday surprise from my extended family <3 pic.twitter.com/cJozQZybjN

— Britney Spears (@britneyspears) December 2, 2013