Watch: Jamie Lynn Spears Sings Song About Britney Spears

On the fast track to reclaim her career, a stage-ready Jamie Lynn Spears delivered an intimate set at the 3rd and Lindsley Bar & Grill in Nashville, Tennessee.

In a jean jacket and a tiny black dress, the former "Zoey 101" star took the stage to sing her new song titled "I Look Up To You," and it's easy to notice the song may be about her big sis, Britney Spears.

Once on stage, Jamie told the audience, “I’m so happy to have all of you here, thank you for coming out tonight,” adding, "This next song is called "I Look Up To You", um, you can imagine who I wrote it about."

After the performance, the 21-year-old mother of one tweeted, “Thanks to everyone who came out tonight!! Sooo very appreciated!!"

Check out Jamie's new song below where she sings out, “It all happened way too soon, They took away your innocence".