y2k prom dress Dress: Elegant Long Ruffle Dresses, White... From Domainstore, $23.96 color display Vintage Y2K Whimsigoth Maxi Prom

Oval shapes must select dark, single-breasted jackets with wider collar spreads and pleated trousers worn with suspenders

Elements of her wedding dress design remain popular in bridal fashion today, as some brides inevitably chase that fairytale dream

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Reinforced collars and cuffs often indicate better longevity

Finish off the look with the batty, stylized bowtie and white fingerless gloves

One of the reasons Diana's casual style was so brilliant was its multifunctionality: This outfit would work for meetings, a press conference, photos like this one, and even a casual event