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Reality TV star Teairra Mari isn’t kidding around. The crooner has turned her never-ending 50 Cent feud into a business opportunity.

Mari went to Instagram Monday to announce a line of “I Ain’t Got It” retail shirts.

Over the weekend, the singer released her “I Ain’t Got It” diss record.

A few hours ago, 50 reached an all-time petty low by trolling Mari.

Last week, Mari went to her IG page to troll 50 with a throwback pic of himself and estranged pal Floyd Mayweather Jr.