Hilary Duff enjoys a day out with son Luca in ripped denim shorts

<!-- rectangle --> She's a gym devotee and all of Hilary Duff's hard work is clearly paying off.  The 27-year-old actress and singer stepped out in a pair of tiny denim shorts over the weekend, which highlighted her toned legs.  Hilary attended the Farmers Market in Studio City with her son Luca on Sunday and kept her look casual in shorts, an oversized sweater and a floppy hat.