A pregnant Manhattan woman was robbed of her wedding band and engagement ring at gunpoint by two bandits in a commercial Midtown building, police sources said.

Surveillance video released today shows the robbers swarming the eight months pregnant woman in the vestibule of the building at 37 West 57th Street on the night of August 19.

The thugs — one of them brandishing a gun — pushed her up against a wall, swiped her rings and ran off.

The 32-year-old woman had been waiting for her husband to pick her up after her appointment at a beauty salon in the building, sources said.