NEW YORK — Former Miss California USA Carrie Prejean calls a sex tape she made for an ex-boyfriend several years ago “the biggest mistake of my life.”

Prejean told Fox News on Monday and NBC’s “Today” show on Tuesday that she shot the X-rated video of herself alone when she was 17 and sent it to a boyfriend.

The 22-year-old tells NBC: “It was for private use, but does that justify what I did? No. It was the biggest mistake of my life.”

Prejean was fired in June. She believes she lost her crown because of her opposition to gay marriage. Pageant organizers said she was skipping official events.

Earlier this month, Prejean and organizers reached a confidential settlement. She tells NBC that she has suffered “a campaign against me to try to silence me.”