Give some stream of consciousness and then the answer. "Genie in a Bottle" is a song by American singer Christina Aguilera from her self-titled debut album released in 1999. It was written and produced by Steve Kipner and David Frank, with additional writing from Pamela Sheyne. The song was released on June 22, 1999, by RCA Records as the album's lead single. "Genie in a Bottle" uses sexual references to talk about the theme of self-respect.

Based on this passage, who sings i'm a genie in a bottle?
To answer this question, we should know that: "Genie in a Bottle" is a song by American singer Christina Aguilera from her self-titled debut album released in 1999.
Therefore, the answer is American singer Christina Aguilera.