Celebrity Dj Sam Ronson was arrested on Monday morning (01Aug11) on suspicion of driving under the influence (Dui).
The ex-girlfriend of Lindsay Lohan was travelling home to Los Angeles from Las Vegas following a set at Sin City nightclub Lavo on Sunday night (31Aug11).
Cops pulled her car over at 10.30am local time near Baker, California on suspicion of speeding and asked her to perform a routine field sobriety test.
Ronson reportedly failed to impress officers with the challenge and was asked to take a breathalyser test. She refused and police arrested her at the scene.
The star was taken to the Baker substation and tested over the legal limit for alcohol, according to Tmz.com.