Report: Jennifer Aniston Breaks Down on Set When Scene Reminds Her of Brad Pitt

Jennifer Aniston burst into tears in her trailer while filming in New York — telling an assistant that a scene "reminded her of Brad Pitt," a source said.

The unlucky-in-love actress was late coming out of her trailer while filming "The Bounty" with Gerard Butler a few weeks ago. The source tells Page Six that when an assistant went to fetch Aniston, she was in tears, and said, "I need a moment. This scene reminds me of Brad and me."

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Aniston pulled herself together and managed to put on a smile when she eventually emerged from her trailer. The insider added, "While she enjoyed flirting with Gerard on set and put a brave face on every day, privately she is still very fragile."

SLIDESHOW: Click here for ten recent celebrity breakdowns.

Since Pitt dumped her back in 2005, Aniston has been involved with Vince Vaughn, Paul Sculfor and John Mayer. Describing how she had come to terms with her single-girl label, she told Elle's September issue, "If I'm the emblem for 'this is what it looks like to be the lonely girl getting on with her life,' so be it."

Aniston's spokesman, Stephen Huvane, says the story about her crying in the trailer is "ridiculous . . . it never happened."

RELATED: Click here to read the full report from the New York Post.