Please describe a good workout routine to get a bigger lower body?

Resistance Training: Using weights and/or bands combined with 5-6x/day clean eating is required to increase leg mass. Alternatively, consider cycling with an emphasis on interval training (sprints, climbs) to approach your anaerobic threshold and stimulate muscle growth. Repetitive and lower intensity workouts (running, jogging, aerobics) probably won't be as successful. Good luck!