Robes, 3piece, pajama sets, onesies, nightgowns, etc., are some of the best-selling sleepwear you can buy for toddlers, tweens, and big girls. Simple Joys by Carter’s sells all its products through e-commerce platforms like Amazon. The brand is immensely popular amongst online shoppers across the US. The gray is in the middle of black and white. It is a balance of both sides.