Are Mariah Carey's people sweating over the fact that she can't sweat off those extra pounds?
A source in Mimi's camp tells Radar Online that her handlers are concerned about her putting on weight during her tour with Lionel Richie - to the point where she's having trouble walking to and from the stage.
The snitch says "Every time Mariah comes onstage, [she's] carried on a bed or on a jet-ski. She's clearly miserable. She [wears] five-inch heels during the show, but can't walk more than a few inches at a time and her knees seem to buckle under her weight."
Photos don't seem to show all that much excess baggage, but fans can judge for themselves when Mimi and Lionel pull into San Diego on Thursday and Anaheim, California on Sunday.