Costumes for Your Litte Adventurer Be your favourite pirate in one of our costumes set sail on the seven seas looking for adventure and find the buried treasure. Want to be a cowboy or Indian chief, try our wild west fancy dress. How about our medieval range of costumes become a knight of the round table or the hero Robin Hood and rescue your maid Marion. We also have a fantastic range of other boys costumes from Japanese ninja to doctors and clowns.