Christina Aguilera's Halloween Costume: Singer Finds Her Knight (PHOTO)

10/28/2012 02:59 pm ET

Last Halloween, Christina Aguilera and beau Matthew Rutler dressed up as pirates.

This year, the singer's costume was a tad more ambiguous, but nonetheless festive. The "Voice" coach sported a voluminous pink wig and white crown, while Rutler was her knight in shining armor.

Speaking of chivalry, Aguilera's "Voice" co-star Adam Levine came to her defense this weekend at a press conference, blasting those who have criticized Aguilera for her weight.

"The one thing about the culture right now, celebrity culture particularly, is people feel like they can just say nasty things about other people whether it's Christina or whether it's me," he said, according to People. "She gets a lot and it pisses me off. Of course I have her back and of course I defend her."

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