Elegant Black Prom Dresses Elegancia Can you make a dress longer? , Sometimes! , As an alteration specialist, you have to get creative for some of the more challenging requests, such as making a dress bigger or adding length to the hem. ZAPAKASA Women Black White Long Sheath Black Tie Dress with Slit Off the Shoulder Sweep Strain Formal Dress Women's Formal Dresses & Evening Gowns Nordstrom How To Add Length To A Formal Dress