02/01/2011 08:47 am ET Updated May 25, 2011

'Glee' Cast Apologizes To Lindsay Lohan

The cast of "Glee" apologized to Lindsay Lohan for mocking her during an episode last year ... TMZ has learned.

Lindsay was out at dinner in West Hollywood Sunday night when she ran into the cast (minus Jane Lynch and Lea Michele) ... and naturally, that episode -- mocking Lindsay's frequent trips to rehab -- came up .

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