How many pounds do I need to lose to go down a size?
Photo Credit: Courtesy of 3DStockPhoto (How does Triple A work? image)
The Number of Pounds to Drop to Size 12 The average amount of weight it takes to move from one dress size to another is about 10 to 15 pounds. Moving from a size 16 to a size 12 means dropping two sizes, so you would need to lose 20 to 30 pounds.