A thief stole 13 pairs of yoga pants from a popular athletic clothing store on the Upper West Side, cops said Monday.

The suspect ripped off a Lululemon location, at Broadway and West 75th Street, of the trendy tights totaling $1,664 at 6:10 p.m. on Jan. 19, police said.

After swiping the pants from a display, the thief ran out and headed southbound on Broadway.

The suspect remains at large.