So Relative! Already As Awesome As My Mimi Baby Tutu Bodysuit Approximate sizing: Newborn (up to 7 pounds), 6 Months (7-17 pounds), 12 Months (17-25 pounds), 18 Months (25-30 pounds), 24 Months (31-35 pounds). 5.0 oz. 100% combed ringspun cotton 1x1 baby rib with nylon tulle tutu. Flatlock seams. Double-needle rib binding on neck, shoulders, sleeves and leg openings Reinforced three-snap closure.