Jamie Lynn Spears performed at Eddie's Attic in Decatur, Georgia last night, and Britney's little sister sang some of her own songs, along with a cover of Brit's 2000 hit "Oops! ... I Did It Again."

After "Miss Mississippi," Jamie Lynn started singing "Oops!" and the crowd went wild. The 22-year-old starlet even did some of the signature dance moves, and at the end of the song she said, "It's Jamie, b*tch! My sister has been a big influence on my life, so you gotta throw it back to her, so big round of applause for my sister."