Samantha, the sister of music producer Mark Ronson, was pulled over for speeding at 10.30 am on Monday near Baker, California.
According to TMZ.com, the 33-year-old was driving to her home in Venice, California, from Las Vegas where she had a DJ gig playing at Lavo nightclub in the Palazzo Casino Sunday night, reports the Daily Mail.
Samantha allegedly failed a field sobriety test at the scene and arrested when she refused a breathalyser.
She was taken to a nearby station where she was confirmed over the legal limit.
