It's understandable, as they're easy to throw on and go, but I can't say that they're the most elegant shoe choice with every dress trend
The "black-tie" dress code refers to men's formal wear, not restrictions on dress colors for guests
Floor length A-line skirt with a sweep train and tiered layers
Hook and eye closure
Style with strappy heels and a clutch bag for a classic evening look, or dress it down with chunky trainers and a leather jacket for an edgy urban vibe

and an evening bag of silk, satin, peau de soie, velvet, or brocade material Jewelry same as for cocktail party [sparkly earrings and bracelet or simple button earrings and a very simple gold or silver necklace], only slightly more of it A fur, if you have one Longer is better, but always keep it below knee length Dont be afraid to be bold and add color to your dress Explore this chapter: 9 Advanced Black Tie & Tux Coverage 9.1 Black Tie, Tuxedo & White Tie Evening Wear Glossary 9.2 Black Tie Dress Code for Women Ladies Evening Wear 9.3 Tuxedo Black Tie Myths & Merits Debunked 9.4 Orders Decorations & Medals with Black Tie & White Tie 9.5 Clerical Formal Wear 9.6 Military Formal Attire Mess Dress 9.7 Scottish Highland Dress, Irish, and Welsh Formal Black Tie & White Tie Attire 9.8 Womens Tuxedos and Tailcoats 9.9 Smoking Jacket Guide 9.10 Formal Evening Wedding Attire & Etiquette 9.11 How To Wear A Tuxedo Like James Bond