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That is truly the cardinal rule of cocktail attireif you can wear it to brunch with a friend, it's probably too relaxed

Primavera Couture 3833 Short Homecoming Dress Fitted Sequin Cocktail Dress

Finally, our plus size recommendation is the Pintuck Wide Leg Jersey Jumpsuit from Adrianna Papell at Nordstrom for $189 in sizes 14 22

WHATS YOUR FIRST ADVENTURE

This Karl Lagerfeld Paris Women's Dresses Midi is a Sleeveless Scoop Neck Light Work Wear Fun

For their night out, the 55-year-old journalist and author wore a black, sheer animal-print dress while the 61-year-old Amazon founder Read More Photos: Backgrid USA Posted To:Jeff Bezos Lauren Sanchez