Sesame Street Costumes for Girls -- Sesame Street has been entertaining and teaching kids for over 40 years. It's as popular with boys and girls today as ever! For girls who love Sesame Street, these costumes are a no-brainer! Choose from our cute Abby Cadabby costume, Cookie Monster, Oscar the Grouch, and even Elmo, we have it all! Our girls Sesame Street are brought to you by the letter A... for adorable!