John Shearer / 1 / 23
John Shearer / 1 / 23

Adam Levine defended his "The Voice" co-star Christina Aguilera on his radio this week after Howard Stern poked fun at the pop star's weight.

RELATED: Christina and more celebs out with their kids

Aguilera has been criticized by gossips in recent years for showing off a curvier figure, but recently brushed off the comments, declaring: "As long as I'm happy in my own skin, that's all I need. I'm happy with where I'm at. I have a boyfriend that loves my body. I love my body."

DJ Stern brought up the subject of Aguilera's weight during a chat with the Maroon 5 star on his Sirius radio show on Tuesday, asking him, "Why do you think she's got so heavy, is she upset? She used to be so f------ hot! And her clothes are too tight, am I right?"

RELATED: The best and worst Grammy hair

Levine joked, "Her clothes are tight, she likes to wear tight clothes!" before adding: "She clearly likes to talk about being comfortable with being a woman, and snapping her fingers and doing the whole (diva) thing."

Stern then declared, "When you're a plus sized woman, you can't wear the tight clothes anymore", but the rocker jumped in to reply: "I wouldn't go that far actually."

RELATED: Celebs who can't quit bad habits