Oprah To CBS: Lance Armstrong Interview 'Biggest I've Ever Done' (VIDEO)

ACCORDING TO THE HUFFINGTONPOST.COM

Oprah told "CBS This Morning" on Tuesday that her interview with Lance Armstrong was the "biggest" of her entire career.

Multiple outlets have confirmed that Armstrong admits to using performance-enhancing drugs throughout his cycling career in the hotly awaited interview with Oprah. The interview was filmed over a marathon two-and-a-half hour session in Austin on Monday. The first segment will air Thursday on OWN.

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