does black tie mean black dress I know typically means floor-length, but this fit the bill regardless? : r/Weddingattireapproval Black tie - Wikipedia
Description
Think about the events youve got lined upsome call for a little drama (hello, thigh-high slit), while others are more about understated elegance (a sleek midi with a hint of shimmer, perhaps)
Silk crepe, structured mikado, and fluid chiffon are universally excellent choices

1 de Tchaikovsky y realiz un recital en el
The Traditional Rule: Floor-Length Is the Standard For a classic black-tie event, the safest and most universally accepted dress length is floor-length

Elizabeth Olsen dazzled in a strapless sequined blue gown and gushed about her "handsome" fianc as she arrived at the European premiere of Godzilla in London's Leicester Square last night (May 11)
Heres a quick guide to wedding guest dresses for different types of weddings including Black Tie, Semi-Formal, Cocktail, and Casual