Marie Osmond: 'I Couldn't Get My Breath'

Marie Osmond, who collapsed during filming of hit show 'Dancing With The Stars' whilst performing the samba last night, has revealed that she couldn't breathe - as the air in the studio was terrible.

Osmond told Entertainment Tonight:  It's nuts," she says. "I feel bad that it happened!"

Marie, who says she's fine now, revealed her theory as to why she fainted. "Right at the beginning, I started getting light-headed. The only thing I can think of is I have allergies, the air quality is terrible, and I couldn't get my breath."

And as soon as she woke, it took her seconds to realize what was happening. "I wasn't quite sure what was going on and then I saw everybody. I saw my kids, I saw Tom and I think I said, 'Oh, crap'"!