satin brown dress Paiva Slip in Rich flattering ruched detailing at the side Brown Maxi Silk Satin Slip

Soft pink blooms and marble architecture beautifully juxtaposed with black wedding attire and moody skies

Shop the Look: If your 21st birthday means dancing your heart out under the disco ball, then all you need is a sleek catsuit and a statement necklace for your '70s-inspired look

Read More Wedding Guest Dress Alternatives for Black-Tie Optional Events Anchiy/ E+ via Getty Images You're not limited to a dress, of course

In 1926, Vogue published an illustration of Chanel's simple, straight black dress in crpe de Chine

There are general rules of thumb of what looks best if you are petite or tall, apple, hour glass, or pear-shaped

Adorned with delightful scalloped trim, these shoes fasten with a velcro strap on the side