(TMZ) Katrina Darrell -- the chick who famously auditioned for "American Idol" in a bikini back in 2009 -- was arrested Friday morning for DUI ... TMZ has learned. According to Pomona PD Sgt. Patrick O'Malley, the 24-year-old singer ... also known as "Bikini Girl" ... was arrested in Los Angeles at 12:16 AM ... with her mother in the passenger seat.
Darrell allegedly told police she was en route to a nearby hospital ... because her mom had fallen down at home.
But while Katrina was driving to the hospital, she allegedly ran a red light and smashed into another vehicle. more on this story
