Mashed Clothing Unisex-Baby Keep Calm Auntie Loves Me 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). Please see the images for the official Mashed Clothing size charts. The ones provided by Amazon are not accurate.