Rebel Wilson's pants could be on fire.

A former classmate has accused "The Pitch Perfect 2" star of lying about her age -- by seven years. Wilson has said she is 29 years old but an old pal says she's really 36.

The "friend" told Woman's Day Magazine that she, "studied with Rebel at Tara Anglican School for Girls in North Parramatta, Sydney. But no-one knew of a Rebel Wilson. Her name is – or was – Melanie Elizabeth Bownds, and she’s 36.”

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The actress responded to the age allegations with a few humorous tweets

Kidding aside, several media outlets are reporting that there are legal documents proving Wilson is fibbing about her age and birth name. Wilson has yet to confirm or deny with any seriousness.

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