A woman charged with stealing a dying Manhattan fashion exec’s identity has finally been nabbed after spending four months on the run.

Erin O’Hanlon, 34, was arrested Monday in Hollywood, Fla., where she fled after allegedly ripping off $14,000 of Kate Sullivan’s savings and opening up four store credit cards in her name last September, authorities said.

O’Hanlon was caught after Sullivan’s cousin posted on social media The Post’s April story about the swindle and state police began getting flooded with tips.

“This brought a lot of heartache,” Sullivan’s sister Sarah, who lives in Los Angeles, told The Post. “I’m thankful to my sister’s bible, the New York Post.”

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Sullivan, who worked for designers Kimora Lee Simmons and Diane von Furstenberg, became the victim of identity theft just days before she died on Sept. 28, 2014, from lung cancer at age 50.