Ruth Barker Ginsberg and 50 Shades of Grey(hound) were two of the best costumes at last year's annual Jamaica Plain Canine Costume Parade. What will dogs be sporting this year?? The 16th Annual JP Dog Parade, Costume & Fashion Show will take place on Saturday, October 26, starting at the First Baptist Church (633 Centre St.,) with signups starting at noon. The rolling rally parade will make its way down Centre Street with a police escort -- no word on whether the K-9 unit will be participating. The parade will finish at the Loring-Greenough House where costumed dogs (and their owners/guardians/life coaches) will strut on the red carpet.