A while ago ModCloth sold this dress for $44, which is quite insane considering it's nothing more than a striped tanktop and a skirt with elastic waist.
I found a striped shirt on clearance for $3. I got rid of the flowers (I don't know what the designer was thinking when he/she decided to put them on in the first place).
Sew some gold anchor buttons on
Add a blue skirt with elastic waist.