Browse Costumes: Modest formal dresses

Ismahan reader recently wrote in to say, 17 years, IMA, and I'm also Muslim. This means that we hold by a strict dress code. I hope my school to attend annual semi-formal dance in February, and my parents finally let me go since last year in South Africa! My problem is I have no idea what to wear, for I gotta let me wear a dress that must knees lol, but my arms are covered SMH lol. So I was wondering whether all help me PLEASE could find something to wear I need a muse! I love how all the styles together and I was really hoping that you all can help!