A sexy, former gal pal of Mick Jagger was the victim of a sleazy extortion plot by her former housekeeper at her Upper East Side pad, prosecutors say.

Louie Evans, 34, allegedly threatened to go public with photos of eccentric ex-model and onetime Jagger love Victoria Fulton Vicuna doing drugs unless he received $500, law-enforcement sources said.

Evans was bitter because Vicuna, 51, fired him for laziness, they said.

Evans, who has an attempted-burglary conviction, was charged with attempted grand larceny and aggravated harassment.