Credit: Trae Patton/NBC © NBC Universal, Inc.

Just when we think we’ve got her all figured out, The Voice coach and pop diva Christina Aguilera will throw us a monstrous curve ball. She started out the season baring nearly all of her newly-svelte figure, but lately has given us a look at her more demure side. In fact, on Monday, she rocked a schoolgirl look with a headband braid that made her look — dare we say — innocent. It was certainly a departure from the sexy, black band-aid dress from a few weeks ago.

Alas, last night, she switched things up again as she was joined by team members Jacquie Lee and Matthew Schuler, both of whom made it into the Top 8, for a medley of Michael Jackson hits. She not only bared her cleavage but she pulled a Lady Gaga on us by shunning pants altogether.

She also wore her hair super curly, which brought us back to her crazy ‘do from her “Lady Marmalade” video. The sexy outfit was the perfect fit for the edgy number, and Xtina’s confidence and stage presence seem to know no bounds.

What do you prefer — Christina’s more demure looks or when she shows off her sexy side? Weigh in!