Shop our Fierce selection of Teen Girl's Military Costumes. Take to the skies with our curvy and original Air Force Angel costume! Or go a little old-school in our super-cute Vintage Army Girl costume. Or if the seas are where your heart is, we have an adorable Sailor Costume. Fierce Costumes' Teen Girl Military costumes are perfect for any Halloween party or event. Make it a memorable night with a Fierce Costume.