Although the "Medicine" singer sticks to the annual ball's theme some years more than others, there's no doubt she stuns in a beautiful designer gown every single time, whether it's a sheer, bod-baring dress or an elegant, flowy cape number.
For her very first Met Gala, Lopez attended with then-boyfriend Diddy, formerly known as Puff Daddy. She opted for a monochrome beige outfit of a cropped, furry jacket and keyhole halter dress, which turned out to be a very sultry cutout number.
2004: "Dangerous Liaisons: Fashion and Furniture in the 18th Century"
The multitalented artist embodied high-fashion, 18th-century vibes exactly in an ornate, gothic, black tiered lace gown with florette detailing by Dolce & Gabbana. Lopez arrived with the designers, Domenico Dolce and Stefano Gabbana. She kept her makeup glowy and minimal, punctuated by a scarlet lip and braided updo.
2006: "AngloMania: Tradition and Transgression in British Fashion"
Lopez gave us movie-star glamour in a soft pink, pleated, one-shoulder Versace dress, completed with shiny, blown-out tresses and glitzy jewelry, a classic 2000s J.Lo look.
2007: "Poiret: King of Fashion"
Looking like she stepped out of The Great Gatsby, Lopez shimmered and shined on the red carpet in a sparkly, metallic, bateau-neckline column gown from Marchesa. Her voluminous curled bob adorned with a foliage-shaped hairpin finished the look flawlessly.
2008: "Superheroes: Fashion and Fantasy"
Another one-shoulder moment! The pop star was a vision in an embellished sea-foam-blue tiered Alberta Ferretti number, accessorized with an oversized coordinating cuff.
2010: "American Woman: Fashioning a National Identity"
Regal realness was delivered in this embroidered, strapless, A-line Zuhair Murad tulle gown, made a touch sexy courtesy of her smoky eyes and glossy lips.
2011: "Alexander McQueen: Savage Beauty"
The fashion icon turned heads in a bright red Gucci dress, which featured a statement floral shoulder shrug that was on full display thanks to Lopez's slicked back hair and matching lip.
2013: "Punk: Chaos to Couture"
Lopez paid homage to the gala's edgy theme in a nude-and-black sequined spotted Michael Kors long-sleeved dress and a faux mohawk no less!
2015: "China: Through the Looking Glass"
She continued the naked dress theme in a sheer bedazzled Versace one-shoulder gown. The red dragon motif strategically covered her envious bod and perfectly channeled the gala's Chinese theme.
2017: "Rei Kawakubo/Comme des Garçons: Art of the In-Between"
Lopez floated on the carpet in a billowy, goddess-like light blue Valentino cape number, topped off with an elegant, retro, pulled-back 'do that let her radiant locks flow down.
2018: "Heavenly Bodies: Fashion and the Catholic Imagination"
J.Lo's most recent Met Gala look was truly a stunner, an intricate embellished-and-feathered Balmain gown emblazoned with a huge, bejeweled cross and with a thigh-high slit.
Peek more standout looks from Met Galas past in the gallery below: