black a line dress formal A-line Off Shoulder Velvet Long Prom Dress, Velvet Evenin Tulle Length Ever-Pretty Elegant Formal Dress with
Description
New Look Sewing Pattern Misses' Halter Dresses with Back Tie Item Number N6666 $5.99 Misses Dresses with thin shoulder straps and back tie detail

The headband also goes really well with the look, a friend said

Hilton was wearing a patchwork dress featuring pink, purple and silver sequins

Again, chatting with the host will give you helpful pointers as to their interpretation of the dress code to see if you're on the right track (and to avoid unplanned twinning).

The pockets add just enough personality without distracting from the clean silhouette

It is a great choice for any occasion, elegant or casual
