‘American Idol’ Bikini Girl Pleads Not Guilty to DUI

Katrina Darrell — the girl who infamously auditioned for “American Idol” back in 2009 wearing just a bikini — insists … she isn”t a drunk hit-and-runner … pleading “not guilty” to DUI today.

our sources broke the story … Katrina was charged last month with one count of DUI and two counts of misdemeanor hit and run, stemming from her March arrest.

As we reported, Katrina was busted in L.A. after allegedly running a red light and smashing into another car. According to police, Katrina attempted to flee the scene … but was pulled over down the street by a cop who heard the crash.

Back at the police station, an officer administered a breathalyzer — and Katrina allegedly blew roughly twice the legal limit in California.

She”s due back in court June 29th.