Marie Osmond says she doesn't know why she fainted during ABC's live broadcast of "Dancing With the Stars," but it may have something to do with allergies.
Osmond and her partner, dancer Jonathan Roberts, the first performers on Monday night's show, had just finished a samba and were listening to comments from the judges when she suddenly toppled.
"I feel bad that it happened," the effervescent 48-year-old singer told "Entertainment Tonight" in an interview that was to air Tuesday night.
"Right at the beginning ... I started getting lightheaded. The only thing I can think of, I have allergies. ... The air quality (in Los Angeles) is terrible. And I think I just couldn't get my breath," Osmond told "E.T."