Around 10:30 p.m., Bynes, 26, was spotted "holding up traffic and doing an incredibly slow ... 3-point turn in the middle of Robertson [Blvd.]," an eyewitness tells PEOPLE of the incident on the major thoroughfare.
"It was taking forever and she finally made it into the driveway," the eyewitness adds. "She looked wobbly – I guess it could have been the heels since she was wearing sky-high nude pumps, but she did seem out of it."
After neglecting to pay the valet (who had to chase her down for the $8 charge), Bynes, who looked quite thin according to the witness, and a male friend went into SUR restaurant and bar.
Oh boy, this could be a terrible, terrible train wreck!
And all this despite that fact that her father denies she drinks...