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Christy Martin countered critiques of Sydney Sweeney 's portrayal of her in the biopic "Christy" ... appearing to throw some jabs at detractor Ruby Rose .

Posting a picture of herself with the "Euphoria" star, Christy wrote ... “I’ve always been a fighter. My life reflected that in every way and now I fight for others. The past few days I have seen some people attack my friend Sydney Sweeney." Instagram / @christymartinpromotions

The retired boxer continued ... "Syd not only worked her ass off for this film, she worked her ass off for me. For my story. For so many others suffering in silence. So I want to be clear about who Syd is. She is my friend and ally!"

This comes after Ruby took a few shots at Syd on her Threads account, indicating the LGBTQ+ community is

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