Posted on Thu Sep 20, 2012 07:45 AM PDT
We're still speechless that Britney Spears used her real voice to sing!
The pop star and mother of two celebrated fellow X Factor judge LA Reid's birthday with a rendition of Happy Birthday ... and presented him with a cake.
We knew you had it in you, Brit! Let's hope this is the start of a "non lip-synching" trend for you.
Britney Spears Glams Up For Her Appearance On Jimmy Kimmel Live - Sep 13, 2012
Britney Spears And Demi Lovato Rule The Red Carpet At The Premiere Of The X Factor - Sep 12, 2012
Britney Gets Her "Gangnam Style" On - Sep 11, 2012
Britney Spears Shows Off Her Abs In New Twister Promo Video - Sep 10, 2012
Britney Spears Compares Herself To Kim Kardashian - Sep 05, 2012