The former "Zoey 101" star, 21, introduced the country ballad "I Look Up To You" by telling fans, "You can imagine who I wrote it about."
Lyrics include: Saying scared little girl living in a big old world/You've outgrown your room, it all happened way too soon/They took away your innocence. We forgot our strong defense.
In 2008, Britney suffered a public meltdown when she was hospitalized and placed under the conservatorship of her father Jamie. She is now working as a judge on the second season of "The X Factor," which premieres on FOX in the fall.