A sticky-fingered worker may have made off with a Park Slope woman’s baubles, police sources said.

The victim, 44, left her Fifth Street apartment near Fifth Avenue about 9:30 a.m. Friday, and came back about 4 p.m., cops said.

Her landlord gave plumbers access to her bathroom for repairs.

When the workers left, she spotted footprints in her bedroom– and made an unfortunate discovery.

A gold ring with three diamonds, an antique Filigree ring, a gold and diamond band, and a child’s sapphire ring were taken, as well as other items in her jewelry collection, sources said.

No arrests have been made.