You can find the cutest prints in Spotlight if you have time to rummage through the piles. I couldn't resist this cute forest print for Olive. Perfect for a pinafore.
I used the Bloomy Girl Pinafore by Puperita. It's a good pattern, the only thing I would change if I made it again would be to size up, I made a size 6 and I don't think it will fit Olive for long.