The Girlfriend's Guide to Black Tie Dress Codes. Black Tie is the second most formal dress code and reserved for formal evening events and galas. Women should opt for floor length evening gowns boohoo Women's Drape Back Detail Long Sleeve Maxi Dress Size 14 Lulus White Keeley Lace Mock Neck Long Sleeve Maxi Dress Womens Medium (Available in XS) 100% Polyester Floral Macys Long Pink Dress Women's Long Floral Dresses Macy's Long haired young woman in black loose knit dress and black stilettos leaning on a pillar, looking at camera, leg bent at knee, trees in blurry background Stock Image Everypixel Elegant Modern Chinese Style Blue Qipao Dress Vintage Inspired Long Butterfly Blue cheongsam, with chest pads, and Free double layer opaque leggings