For Major Twinning: Baby Dr. Seuss's Thing 1 and Thing 2 Baby Costume Whether you have twins or little ones that are siblings, cousins, or friends, make them the perfect pair with matching Baby Dr. Seuss's Thing 1 and Thing 2 Baby Costume ($69 each). It's perfect for the kiddos who are truly two peas in a pod. Image Source: potterybarnkids.com Baby Dr. Seuss's Thing 1 and Thing 2 Baby Costume $69 from potterybarnkids.com Buy Now