Little Bo Peep, find some sheep! For a great group costume, dress like Bo Peep and gather some friends (as few or as many as you would like) to play the sheep. This dainty country girl needs a long, pastel-colored dress and a bonnet that ties under the chin. You can buy this costume or stitch up your own. Another key prop is her shepherd's staff for herding her flock. A shortcut for the sheep: Buy matching costumes online or at your local costume shop. Or, do it yourself by gluing fluffy, white batting onto white pants and a white hooded sweat shirt. Not baaad!