Shop our Fierce selection of Teen Gangster Costumes. The mob just got a lot sexier! If you're looking to rule the underworld you may as well look hot while you're doing it! Check out our creative and sizzlin' Mobster Girl  costume. We also have a curvy and stylish Gangster Suit costume for the gangster inside you! Our Teen Girl gangster costumes are perfect for any teen Halloween, event or photo opportunity. Make it a night to remember with a Fierce Costume.