You can make a bee costume for either a boy or a girl, easily and in a single evening. The main body of the bee costume is made using an oversized black sweatshirt, and all of the details are sewn onto it. Use black tights for the legs of the bee costume--or, if you are dressing a boy or experiencing cold temperatures, use black sweatpants.
Cut several strips of yellow felt 2 inches wide by the width of the felt yardage. The amount and lengths will be determined by the size of the sweatshirt. Note: If you are using a really small child's sweatshirt, you may want to cut 1-1/2 inch wide strips.
Lay the sweatshirt on your work surface with the back side up. Center, horizontally, the beginning of the felt strip approximately 2 inches below the top of the shirt and pin through the back layer of the shirt. Continue to pin the strip, horizontally, around the shirt. This will take you over the sleeves of the sweatshirt. Felt has a give or stretch to it, making it easy to stretch it slightly to adjust to the curve of the sweatshirt. Overlap and cut the strip 2 inches past the beginning of the strip and pin. This overlap will give you plenty of room to adjust it when sewing.
Repeat with additional strips approximately 2 inches below the last. When you are past the section where the sleeve connects to the body of the sweatshirt, wrap the strips around the body only. The rest of the sleeves are left plain.
Stitch the strips to the shirt using a running stitch 1/4 inch from the edges of the strips. Use yellow embroidery thread. Stitch the strip ends together and trim the excess if needed.
Hot glue one end of the 5/8 inch wide black grosgrain ribbon to one end of the plastic hair band. Wrap the ribbon around the hair band. Trim off the excess and hot glue the end of the ribbon to the other end of the hair band. Find the centre of the black chenille stems and the centre of the hair band. Wrap the chenille stems around the centre of the hair band and twist. You will have four chenille ends sticking up above the hair band. Twist two chenille ends together to create antennae. Apply a dab of hot glue to the ends of the antennae and insert each into a 2-inch yellow pom-pom.