cocktail / party holiday dresses Dresses! I made a list for ya'll Classic Match Christmas Party Dresses | Holiday
Description
Princess Diana was well aware of these sartorial stipulations, and, perhaps, was sending a rebellious message to the monarchy by wearing a look that pushed the envelope

Long sleeves, lowers waist linen elasticated, with frill at bottom

Some pieces had floral patterns

Neckline:Straps

I have done the homework for you