Katrina Darrell didn't overwhelm judges with incredible vocal talent on last night's eighth season premiere of American Idol.

But the part-time model did accomplish something even more impressive: she caused Simon Cowell to go speechless!

Indeed, Darrell auditioned for the show in a bikini. Her rendition of Mariah Carey's "Vision of Love" actually wasn't terrible - but as the following video depicts, we doubt that's the reason she moved on to Hollywood...

[video url="/videos/katrina-darrell-audition/" title="Katrina Darrell Audition"] [/video]

You'll likely be hearing a lot about Katrina Darrell today. Click on the images below to see why:

Matt Richenthal is the Editor in Chief of TV Fanatic. Follow him on Twitter and on Google+.