American Idol embarrassment on American Idol!

Kara DioGuardi admits she peed her pants during the season 8 finale of American Idol.

Kara made the revelation on Ryan Seacrest’s KIIS FM radio show.

“It was live TV, and first of all I didn’t even want to go to the beach in my bikini let alone in front of 25 million people,” she said.

“I hadn’t eaten for like a week. They were like ‘we’ll give you money for your charity,’ so then I had to do it. So my manager was smart enough to say, ‘honey you ain’t wearing a white bikini, you’re wearing a black  one cause I know you’re going to tinkle in it you have that nervous thing;’ so I totally did…it wasn’t a full on puddle it was just like a little…like a could’ve used a depends under garment right there.”

Meanwhile, in her new memoir A Helluva High Note, DioGuardi reveals that, among other things, she was molested as a child and was date-raped by a well-known music producer.

DioGuardi reveals that she was repeatedly molested when she was just 11 years old by a family friend’s son who was in his late teens.

“On one particular day, he took me into the back shed of his house and put his hands all over my breasts and vagina,” she writes. “I remember freezing and not knowing what to do.”

In 2000, as her music career rose, she went on a date with a “fairly known producer,” who sexually forced himself upon her after a cordial dinner.

“[W]ithin a few hours, he was on top of me, pumping, sweating, and speaking to me in Spanish, not a word of which I could understand,” DioGuardi writes.

She kept the violent date-rape secret for fear it would ruin her career, she says.

DioGuardi also writes of sexual harassment at the hands of a “hugely successful artist” who was obsessed with “Russian porn” and hiring strippers for perform sex acts in front of him.

Of her early season 9 departure from Idol, the star explains that she was struggling to get pregnant via IVF.

“I wanted a child and there was no way I could get pregnant under the stress of eighteen-hour work days and live TV. . . My desire to be in control of my destiny was larger than my need to be a household name.”