Don your best Halloween costume and join thousands of participants in one of Del Ray's favorite traditions. The 20th Annual Del Ray Halloween Parade begins at Mount Vernon Ave., south of E. Bellefonte, and continues down to the Mount Vernon Recreation Center play fields at Mount Vernon and Commonwealth Avenues. Children, pets and strollers in costumes are invited to march and show off their finest and scariest Halloween garb with prizes in different categories. The parade and all activities are free! Please note that both judging for Best Decorated Stroller and registration for Best Pet Costume will begin at 1:30 p.m.