Prejean, the former Miss California USA, says she made the sex flick of herself alone when she was 17, for an ex-boyfriend.
The 22-year-old beauty queen confirmed the existence of the tape to Fox News Monday night.
She told NBC's "TODAY" Show Tuesday that the tape was for private use, but said that did not justify it.
The X-rated video surfaced during a negotiating session with Miss California pageant officials over a lawsuit Prejean filed against the organization for stripping her of her crown earlier this year. When the tape’s existence was revealed, Prejean settled her suit with the pageant, which reportedly paid her $100,000 to go toward her legal expenses.
Prejean was fired in June. She believes she lost her crown because of her political views. Pageant organizers said she was skipping official events.
In August, Prejean sued Miss California USA organizers for libel, slander and religious discrimination. She accused them of telling her to stop mentioning God, even before she made controversial remarks against gay marriage.
The pageant countersued Prejean last month, claiming the buxom blonde still owed them $5,200 for the breast implants they helped her buy.
Now both suit and countersuit have faded, as a sex tape surfaces