id give the agression and experience advantage to judge judy, probably a much better striker and she knows how to use that hammer.
but kirstie alley, she's got knockout power in each punch with her weight. I dont think she would be able to handle judge judy's submission game on the ground but she may be able to land devastating strikes from the top position.
so its judy judy:
remember this is a fight with ufc regulation rules,in a ufc cage.
three 5 minute rounds, i doubt this matchup would go the distance
btw mods please dont move this, if you must please at least put it in the general mma area. if you must