These Matching shirts are sold separate, please select the size you’d like for the adult shirt, add to cart, & then come back & add the size you’d like for the child shirt/onesie. SIZE ▸ Take a look at the photos to see a specific sizing chart for this t-shirt style ▸ Please note that these shirts are unisex size. Women going for a more fitted look should size down one size ▸ Lay your favorite shirt at home flat & measure armpit to armpit to compare to the size chart in the photos RETURNS OR ExCHANGES ▸ All of our shirts are custom printed just for you so I do not accept returns or exchanges due to size ▸ If there are any issues with the shirt, please message me & I will replace it ASAP Thank you for supporting my small business! Christmas Trees Mommy & Me Shirt, Shirts For Women, Tee, Tshirt, For Christmas, Holiday Family Tees