Studio D Pilates is located in an old stone farm house in East Norriton, offering both traditional and contemporary Pilates instruction. Ms. Dale Irwin, studio owner, has been instructing since 1992. Ms. Irwin is also a certified personal trainer and a member of the Pilates Method Alliance. Individual pilates sessions are $55, duet $35 per person, and trio $20 per person. All sessions are by appointment only.