These shirts were a gift from my Mama and I am obsessed! He really is my Bestie ❤️ I would say the baby sizes run a little big so size down if you are unsure. I am also obsessed with my faux leather spanx! I am wearing a medium and would say they’re tts. My Adidas also run big so I would size down if you’re in between sizes! LTKVDay LTKSeasonal LTKbaby