The Ninjas (Rosemary Natale, Maureen McCullough & Kathy O'Connell) are villainesses from the 1991 movie Bloodsucking Pharaohs in Pittsburgh.
The bumbling heroes are attacked by three ninjas who strip off their tops, revealing that they are sexy white females, wearing black bras. One of the cops is wounded with a ninja's sword but manages to retrieve his .38 revolver and kill all three ninjas; one is shot between the eyes, and one taking three bullets in the body before she falls.
See also: Grace