New York, June 17 : Lindsay Lohan appeared "erratic" as she spent an action-packed weekend, according to reports.

The Mean Girls star was spotted with younger brother Michael at the AXE Lounge in Southampton, where she allegedly gulped Shirley Temples and had security guards delete pictures of her taken by partygoers.

"She spent most of the time on her phone," the New York Post quoted a source as saying.

The singer, on the following night, was allegedly behaving "extremely oddly and erratically" at the Lower East Side club The Box.

A witness said: "She came in at 4:30 a. m. and went to a VIP room, where she immediately climbed a stripper pole. A little later, she walked up to a tall, handsome guy and asked him a question. When he said he didn''t know the answer, she lost it and started yelling and cursing and flying around the room. She was not acting normal."

Lindsay was seen dancing and singing karaoke on Sunday. (ANI)