black dress plus Size Sadie Tank waist plus Plus Size Desiree Gown Long

Audrey Hepburn and the Little Black Dress (1961) The 1960s marked the next monumental moment in the evolution of the Little Black Dress

If you're more of a tomboy, you can wear jeans and a T-shirt for the birthday dinner

In all black, they make a good (more comfortable) alternative to boots and look best with casual outfits such as chinos, an old tee and a leather jacket

A New York Times headline from the event read "Prince of Wales Upstaged at Concert by Financee [sic]." The story noted that "the couple were cheered when they arrived at the hall, but the real sensation occurred when the 19-year-old Lady Diana got inside and took off her wrap." "'Lady Diana wore a low-cut gown, well off the shoulder, there were audible admiring gasps,'' said a breathless BBC reporter who witnessed the event," the New York Times continued

Sound the alarms