Spotting transplanted LA star Amanda Bynes has become the “Where’s Waldo?” of New York’s club scene. The former Nickelodeon actress — who has a hearing in her alleged hit-and-run case in LA Dec. 17 — was seen at new club Rosewood in a “white midriff-baring shirt, a ton of makeup and super-long false eyelashes” yesterday around 1 a.m. “She seemed sad and empty-eyed,” a spy said. “She kept looking around like she wanted someone to talk to her.” Bynes occasionally raised her hand in the air to dance before heading out after an hour. She then surfaced at Meatpacking club SL “by herself, just walking around bumping into people,” a witness said. “She tapped a girl on the shoulder and asked to take a picture of her outfit. The girl recognized her and asked for a picture in return. But Amanda said that wasn’t her name and told her ‘no photos.’ ” On Monday night, Bynes was at a Duane Reade with newly dyed purple locks and a suspicious-looking cigarette. A source said, “She was blatantly smoking and she had lipstick all over her face.” A rep for Bynes didn’t return calls.