black dress from h&m Women's Sleeveless shoulder dress in twill with a deep sweetheart neckline and narrow sleeve panels Hm Bow Detail Dress Black,
Description
Leather lining

Open back, concealed back zip
But if the two are clearly different, then the style intention will be crisp and clear

It's best understood as formal attire with permission to celebrate so lean into refined details like a velvet blazer or a patterned pocket square rather than dialing everything back to basic black
