9 doll hats- - small ones are  2 3/4 x 2 1/2  --head opening about 1 1/4 diameter.  Straw hat( regular style) is 4 in diameter with 2 in diameter opening.  The other two straw ones are bonnet style- larger one is about 4 1/2 inches with 2  1/2 in opening. Smaller one is 4 inches with 1 1/4 inch head opening.