long sleeve black dress with slit Maxi | Womens | X-Small (Available in M, L) | 100% Polyester | Lulus | Homecoming Hang Or Line Dry LEADER OF THE PACK LONG

I linked a similar one above from Asos, as well

Perfect for formal events, evening parties, or a polished office ensemble, this dress exudes timeless grace and modern luxury

Light Browns (Tan, Khaki): Perfect for casual settings, these shades add a playful twist to your formal black suit

Guests can wear boho outfits, flower crowns, and fringe jackets, embracing this relaxed adult birthday party theme idea

Black Tie Optional for Women Formal (floor length) evening gown Dressy cocktail dress A little black dress Dressy separates Black Tie Optional Men Tuxedo (see Black Tie above) Dark suit, white dress shirt, and conservative tie Leather dress shoes and dark dress socks