Which Pop Star Wore This Girly Outfit to Elton John’s Oscars Party? (PHOTO)

The “Genie in a Bottle” singer-turned-Voice coach looked adorable in her Back to Basics phase with her platinum blond locks and uber girly outfits.

She attended Sir Elton John’s party in this baby blue dress on Feb. 27, 2005. Less than three years later, she gave birth to son Max Liron Bratman.

Were you able to guess that it was Xtina? Tell us below, and click here to play more “Guess Who?”