Is Lohan already off the wagon?

Is recently rehabbed Lindsay Lohan already back off the wagon? The “Mean Girls” star has been downing champagne and other alcohol, according to Star, which reports that Lohan was drinking at the West Hollywood hotspot Winston’s on April 19.

“They brought a bottle of champagne to the table,” an “eyewitness” told the tab. “Lindsay picked up her glass and drank it. Later, a waitress brought over a tray of shots for the table. Lindsay took a shot along with all of her friends.”

Lohan has laughed off reports that she’s drinking, but a source insists that the actress goes “to great lengths to make sure no one sees her drink” — sometimes having friends buy the drinks so that they don’t show up on her credit-card bills or insisting she never bought the alcohol.

“On three separate occasions, at the end of the night, when all the alcohol was gone, she threw a fit and began crying and denying she ever had ordered the bottles, saying she’s not allowed to drink,” a source told Star. “Now she has her friends order for her — and sometimes she brings her own liquor, which she hides in an oversized purse!”

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