A 22-year-old mom was stabbed to death in Brooklyn early Tuesday while pushing her infant son in a stroller, police said.

The victim, whose name was not immediately released, was wheeling her 9-month-old son in a black-and-red stroller down Lott Ave. near Bristol St. in Brownsville when she got into an argument with a woman, cops said.

The argument escalated and the other woman stabbed the victim in the chest about 12:40 a.m., according to police.

Paramedics rushed the victim to Brookdale University Hospital but she could not be saved, officials said. The baby was unharmed.

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