Jackie Onassis wore a classic black dress to the 1974 Met Gala. The black dress was anything but boring, however: it was a flowing, ruffled, strapless Valentino gown fit for America's queen's official debut at the gala. 

This look ties Blake Lively for most iconic Met Gala look. Cher's Bob Mackie dress for the 1974 Met Gala has its own name (the Naked dress) and has been on the cover of TIME magazine. The dress was made out of souffle, a french fabric that was banned in the USA, which was then wet in order to stick to her body, hence giving it a naked look. Kim Kardashian referenced this look for her 2015 Met Gala dress. 

Naomi Campbell's dazzling silver Versace dress at the 1995 Met Gala is another look that has stood the test of time, one that people circle back to when they reminisce on the era of the true supermodel. The strapless stress sparkled from every single angle, making Campbell look like a mirrorball. 

As expected at the Christian Dior themed 1996 Met Gala, Princess Diana wore a beautiful Dior gown. What was unexpected was the daring blue satin slip dress she showed up in, complete with a black lace trim. Her diamond and sapphire choker reminded us of the princess that she was. 

V's newest cover star stunned in a beaded, zig-zag pattered Versace gown at the 1999 Met Gala. With red and pink beads contrasting the nude lining, Bündchen made waves that night. She kept is simple accessories wise, showing off her dewy makeup look and high cheekbones with a slicked back, beach wave ponytail. 

Claire Danes' mermaid gown at the 2005 Met Gala screamed Chanel. The black lace and dainty pink shoulder jacket looked like they were made to be worn on the streets of Paris, sealing the deal for this look being most on-theme that year. 

Taylor Swift has had many memorable Met Gala looks over the years, but her 2014 blush pink Oscar de la Renta gown takes the cake. With a sizable train and a large bow, Swift looked pretty as a present. She really had the whole "red lip, classic" look down at that point, too. 

Rihanna's imperial yellow Guo Pei gown for the 2015 Met Gala took two years to make, which given the sheer size of its train, makes sense. The look included matching yellow fur trim, as well as a headdress that matched the stitching details of the dress. 

Cara Delevingne debuted her shaved head at the 2017 Met Gala, and for the occasion, she spray-painted her head a metallic silver color and added rhinestones to it. Her Chanel pantsuit stole the show, however, with silver mirrored suns. Very tin man chic. 

Zendaya's chainlink, medieval knight look from the 2018 Met Gala was one of her best red carpet looks ever (and that's saying a lot!!). The Atelier Versace dress was inspired by Joan of Arc, complete with a metal breastplate, a spiked belt, and sky-high metallic heels. 

Lady Gaga's 2019 Met Gala look included not one, not two, but four outfit changes. Her fluffy, hot pink Brandon Maxwell dress with a matching bow was one of the best looks of the night, and also one of the most on-theme looks that year. 

Kendall Jenner's sheer Givenchy gown from the 2021 Met Gala was the epitome of American grandeur. The Audrey Hepburn inspired look saw Jenner covered head-to-toe in diamonds. Her statement choker necklace and crystal embellished shoes tied the entire look together. 

One of most iconic Met Gala look of all time. This year's co-chair, Blake Lively, stunned in an ornate ruby Versace gown, compete with a beaded train and a jeweled corset that took a combined 600 hours to complete. Not only was the gown exquisitely made, it was dead-on theme.