Career-charging Cameron Diaz is getting back in the saddle for a new role – and RadarOnline.com can reveal she's got rom-com rivals looking nervously over their shoulders as she vies to be queen of 50-something American Sweethearts .

The 52-year-old mother of two is set to star in the action-comedy Bad Day , in which she plays "a single mom fighting to keep one little promise to her daughter on the absolute worst day of her life," according to a Netflix release.

The news comes just months after Diaz broke her 10-year hiatus and returned to the big screen in January for Back in Action opposite her old pal Jamie Foxx . Article continues below advertisement

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