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Met Gala 2017 red carpet: Jennifer Lopez, Blake Lively and Selena Gomez

by Courtney Gisriel / / Source: TODAY

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In the fashion world, there's no bigger night than the first Monday in May, when the steps of the Metropolitan Museum of Art are filled with more couture looks than Paris fashion week.

This year's Met Gala theme honored revolutionary designer Rei Kawakubo and her avant-garde fashion brand, Comme des Garçons. So it was no surprise that the night was filled with dramatic dresses and seriously cool silhouettes.

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RELATED: Met Gala 2016: Kate Hudson, Beyoncé and beyond

Jennifer Lopez and Alex Rodriguez lit up the red carpet by making their first public appearance as a couple. For the occasion, Lopez chose a Valentino gown in subtle robin's egg blue. The flowing cape sleeves played into the night's theme in a very JLo way.

Alex Rodriguez Jennifer Lopez Met Gala
Lopez's winged eyeliner and voluminous hairstyle added to the vintage vibe of the ensemble.Neilson Barnard / Getty Images

Tom Brady and Gisele Bundchen were two of the event's co-chairs, and they looked incredible doing it!

Instead of structured shapes, they chose to break the rules in figure-hugging outfits. Bundchen wore a slinky, silver Stella McCartney sheath with ab-baring cutouts and an open back, while Brady wore a matching gunmetal gray tuxedo with a shawl lapel.

Tom Brady Gisele Bundchen Met Gala
The handsome couple smiled as they strut their stuff on the red carpet!Neilson Barnard / Getty Images

Katy Perry, another co-chair, leaned into the theme with an ornate Maison Margiela ensemble.

The (literal) head-to-toe red dress featured layers of detail, and the entire look was topped off with a dramatic headdress shrouding her face in veil of tulle.

Katy Perry Met Gala
The singer was almost unrecognizable in her dramatic getup.Neilson Barnard / Getty Images

It was a big night for A-list couples, and Ryan Reynolds and Blake Lively did not disappoint!

The pair looked like the king and queen of fashion prom, with Reynolds matching his bright blue bow tie to the feathered hem of Lively's stunning Atelier Versace gown.

Blake Lively Ryan Reynolds Met Gala
Lively and Reynolds are no strangers to a red carpet moment, and last night was no exception!Neilson Barnard / Getty Images

And check out our interview with makeup artist Kristofer Buckle, who created Lively's glowing look.

Selena Gomez's flirty Coach gown fit like a glove while invoking an effortlessly elegant vibe.

The lace-trimmed neckline and thigh-high slit added a touch of sex appeal to the otherwise sweet gown.

Selena Gomez Met Gala
Gomez's bright magenta eye makeup added a pop of punk to her pretty look.Neilson Barnard / Getty Images

To see even more of the night's hottest looks, check out the gallery below.

34 photos
Getty Images
From Jennifer Lopez to Blake Lively, see the most notable looks from fashion's big night.

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