I made a vest for Miss E out of some bright blue fabric from my stash. I traced one of her shirts on paper for the pattern, minus the sleeves. I didn't worry about extra fabric for the center hems as the vest was meant to hang open.
The costume was finished off with some white adult shorts with the waist taken in (perfect baggy pirate pants!), a lavender shirt from Miss E's drawers, and some gauzy white strips to wrap around her wrists.
With her hair in a ponytail, I think Miss E makes a great princess... I mean pirate.