A kid mugger who preys on Hasidic women in Williamsburg held up a mother pushing her baby in a stroller yesterday — only to be nabbed minutes later by a Jewish patrol, police said.

“Give me your money!” 12-year-old punk Shy-kym Samuels demanded — pointing the barrel of a disguised cap gun at the woman’s face — at around 9:45 a.m. on Wilson Street between Lee and Division avenues, cops said.

The frightened woman, 34, who had her 2-year-old in a stroller, gave him her purse.

The suspect, who police said was busted twice before for the gunpoint muggings of two other Hasidic women, didn’t get far. Members of the Williamsburg Shomrim, a volunteer patrol, sprang into action, catching up with the boy at a nearby school and holding him for cops. He was charged with robbery as a juvenile.