A creep followed a woman up the stairs at a Bronx subway station, lifted her skirt when they reached the street and then laughed when she confronted him, cops said.

The 26-year-old victim told cops the man pulled up her skirt around 5 p.m. July 9 at the 3rd Avenue-East 149th Street subway station. The pervert then walked to the nearby BX41 bus stop at 148th Street — but not before she snapped a photograph of him.

He is described as about 20 years old, 5 feet 5 and was last seen wearing a dark do-rag, a black shirt, black sweatpants, green socks, black slip-on sandals and a black backpack.

Anyone with information in regard to this incident is asked to call the NYPD’s Crime Stoppers Hotline at 1-800-577-TIPS (8477) or for Spanish, 1-888-57-PISTA (74782). The public can also submit their tips by logging onto the CrimeStoppers website at www.NYPDCrimestoppers.com or on Twitter @NYPDTips. All calls are strictly confidential.