The wheels continue to come off the track for Heather Locklear.  The sexy starlet was busted and arrested for DUI in Montecito, California late on Saturday night. She passed the drunk test but the cops quickly realized she was stoned off of a prescription drug.

Locklear, 47, was booked for suspicion of driving, while high on prescription drugs on Saturday before she made bail out of the Santa Barbara County Jail at about 11:30 p.m., authorities said.

The Santa Barbara County Sheriff released a mug shot of the fried actress, with running mascara and dark roots showing through her bleached blonde hair.

The actress was in the filthy rich community of Montecito at about 4:30 p.m., when she caught the attention of a concerned driver, cops said.

“She [Locklear] was observed by a citizen pulling out of a parking lot and the woman [witness] thought she [Locklear] was driving really erratically,” CHP spokesman Tom Marhsall said.

Locklear passed tests to show she wasn’t drunk, but cops figured out she was impaired on an undisclosed prescription drug, officials said.

Earlier this year cops were called to Locklear’s home back in May when a 911 call was made out of fear for Locklear’s safety.

Heather also spent time in a psych ward in June to get help with depression/anxiety.

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