every girl should know about this website...incredibly inexpensive! Sooo many cute dresses, formal and informal, cute tops too! Dresses from $7-20
Take an old sweater. Cut a slit in along the shoulder down about 7". Fold over raw edge and sew in place. Sew a piece of ribbon about 15" long to one side of neckline and another ribbon to the other side of the neckline. Tie together!