In general, do most of the O+S patterns run small? I have a 7 month old who is wearing a 9-12 mo size and I squeezed her into a 12-18 mo hopscotch dress. When she was younger, wearing a 3 mo size the 6-12 mo pajamas fit her with no room to spare. My son, who wears a 10-12 is too big for the size 12 nature walk pullover and sketchbook shirt.
Anyone else experience this? I guess I need to size up!