Ragged slacks or shorts.
You have lots of flexibility here so look through your closets to see what might work.
Wear a white longsleeve shirt. Or, just use a white or bright-colored T-shirt. You can cut
slits into the sleeves to give a ragged look. Add a vest (an old button-down shirt can be
cut into a vest pretty easily). Wear or make a big wide belt or tie a bright sash around
your waist. If you don't have pants that'll work, consider making some out of a striped
or bright-colored sheet (use a pair of your pants as a guide, cut the fabric a couple of
inches wide all the way around so you can keep the pants loose, sew, or staple and cover
with masking tape). Accessorize with an eye patch and hoop earring. Tie a sash
around your head or wear a bandana.