13 of Jeff Bezos and Lauren Sánchez's best style moments

While Bezos walked the blue carpet in a marble-esque blazer, Sánchez stood out in a sparkling black-and-red gown.

Her dress had long sleeves made from polka-dot mesh, a plunging neckline that reached her navel, and a thigh-high slit. The daring gown also had an all-over geometric print that sparkled in the light.

Bezos attended in a traditional tuxedo with thick lapels, a white button-up shirt, and a black bow tie.

Sánchez mirrored him in a black mermaid-style gown. It had thin straps, a ruffled lace neckline, and a matching black band around the waist. She accessorized with a diamond cuff on her wrist.

At the 2022 premiere of "The Lord of the Rings: The Rings of Power," for example, Bezos sported a gray suit comprised of a sharp blazer, pleated trousers, and a lighter-toned undershirt.

Sánchez kept things even simpler in a white asymmetrical gown from Tom Ford. The body-hugging piece had a single shoulder strap, a fitted waistline, and a skirt slit that revealed her gold sandals.

Bezos posed for photographers in a black suit, which he wore with a white undershirt and satin tie.

Sánchez took the opposite approach with her outfit, wearing a vibrant red gown covered in tiny sparkles. She also wore silver sandals and a diamond bracelet.

Sánchez showed the edgy side of her style in a minidress from the Italian designer. Its black fabric sparkled as she moved, and black belts crisscrossed over the garment.

She wore it with semi-sheer tights and pointed pumps.

Bezos, on the other hand, swapped his usual tuxedos for a sleeker suit. He wore a dark T-shirt underneath a lighter jacket and completed the outfit with shining dress shoes.

Sánchez's Elie Saab gown had off-the-shoulder sleeves that created a plunging V-neckline. The form-fitting bodice was actually a bodysuit, and a semi-sheer skirt with strips of sparkly black fabric sat atop it.

Bezos kept his look simple in a black tuxedo.

Bezos wore multiple neutral shades for the event, pairing a pale gray shirt with a taupe jacket, white pants, and taupe shoes.

In contrast, Sánchez wore a form-fitting red gown with embellished spaghetti straps and clear heels.

Sánchez's sparkly minidress from Staud, which had a slit on one side, had a celestial theme, as it was adorned with constellations. She accessorized with silver shoes and jewelry.

Bezos paired his short-sleeve black T-shirt and pants with a chic vest.

The couple embraced the mob wife trend for the Dolce & Gabbana party, wearing coordinating looks from the designer. Bezos wore black-on-black with a velvet suit and a black button-down, which he wore with no tie.

Sánchez's dress was more daring, as the figure-hugging gown had a corset bodice and was made entirely of sheer black lace. She wore a blazer jacket with a black rosette on her shoulders, open-toe shoes, and oversize sunglasses.

Bezos wore a charcoal suit to the dinner, which he dressed down with a black T-shirt and black shoes.

Sánchez chose a long-sleeve, black dress for the event. The garment hit her at the ankle, showing off black heels, and had a plunging neckline. A choker completed her look.

Both Sánchez and Bezos wore Lever Couture to Vanity Fair's party.

Bezos' black tuxedo was simple, but he added a diamond brooch to his lapel to elevate the ensemble.

Sánchez wore a red ball gown with a dramatic train. The dress was made of tulle that fell in ribbons, creating volume on the sleeves and skirt and emphasizing the plunging neckline and form-fitting bodice. Her nude shoes and diamond necklace gave the look a timeless feel.

Bezos and Sánchez attended the White House state dinner held in Japanese Prime Minister Fumio Kishida's honor on Wednesday.

While Bezos attended the dinner in a traditional black tuxedo, Sánchez wore a deep-red dress styled by Kelly Johnson. The off-the-shoulder gown featured a semi-sheer corset bodice made of lace, contrasting with the silky skirt.

Gold heels with leaf detailing and a sparkly silver bag completed Sánchez's bold look.

Sánchez chose Oscar de La Renta for her Met Gala debut, wearing a strapless gown from the designer.

The black bodice had a simple sweetheart neckline, while a mosaic of fabric that created roses covered the full skirt and train.

On the red carpet, Sánchez told Vogue she thought the gown was "extremely unique and has a sense of femininity."

Bezos didn't walk the red carpet with his fiancé, but he joined her at the top of the Met steps in a classic black tuxedo.