Christina Aguilera is an NPC introduced in Superstar. She can be found on Studio Town lots. As with other famous NPCs, Sims can ask her for an autograph. She is a reference to the real life recording artist.
- She is the only Sim to appear in another simulation game as she appears in Tomodachi Life. Tomodachi Life was released for the Nintendo 3DS and came out on June 6, 2014, eleven years after The Sims: Superstar. She is downloadable through QR codes.