Idol's Kara Dioguardi Upstages Bikini Girl; Flashes Crowd

If looks could kill, you'd be reading Kara Dioguardi's memorial right about now.

Thankfully, the sassy American Idol judge is alive and well after ambushing a scantily-clad Idol hopeful.

Enter Katrina Darell, a.k.a. "Bikini Girl."

You might remember the attractive 20-year-old as the would-be pop star who wore a bikini during auditions, as a gimmick to distance herself from the pack. Darell eventually wound up verbally sparring with then-brand new judge Kara Dioguardi over a performance of Mariah Carey's breakout hit, Vision Of Love.

Sex sells, and it was naturally good ratings move to trot out (a noticeably bustier) Darell out a second time on Wednesday's season finale, bringing her back to accept a tongue-in-cheek award for "Best Attitude." The vision of silicone then graced the audience with a live performance of Carey's 1990 hit.

That's when things got dicey, as the voice of Darell's Idol tormentor, Dioguardi, began echoing during the performance, as she walked down a stage and literally, stole Darell's spotlight. Getting contemptuous glares from a startled Darell, Dioguardi reciprocated the eye contact with "I'm better than you" look to her young rival.

DioGuardi, in a move that would win her favorite charity some money, unbuttoned her black dress to reveal her own sexy body, and wrapped up the set with an insincere embrace with Darell.

Only on reality TV.