Lady La-Dee-Dah is a celebrity hip-hop singer that Libby is a huge fan of her. She appears only in "Jimmy Timmy Power Hour 2: When Nerds Collide!".
Background[]
When Timmy wishes that Cosmo and Wanda would give Carl, Sheen and Libby whatever they wished to keep them out of his way while he asks Cindy out. Libby wishes she was with her faroitve hip-hop singer, Lady La-Dee-Dah. Her wish was later undone by Timmy, when Libby has given his fairies back to him.