The 2015 Grammys Looks So Memorable, We're Still Talking About Them

In a fresh change-up from her usual sexy looks, the singer chose a sweet, poufy pink Giambattista Valli Couture gown.

The actress chose to borrow from the boys in a black Band of Outsiders pantsuit, sans shirt, for the red carpet. She pulled the look together with Venyx rings, a Jacquie Aiche ear cuff, and black Jimmy Choo pumps.

The rapper went bold in a slinky cobalt-blue Armani Privé gown with illusion detailing. She accessorized her look with platinum jewelry by Neil Lane, including a ruby and diamond platinum ring.

The actress showed up backstage in a sparkly red minidress and coordinating pumps.

The singer wore a bead-embroidered black Proenza Schouler gown with delicate train.

Talk about some high-end pajama dressing! The reality star chose a cleavage-baring robe gown, complete with bejeweled pockets, by Jean Paul Gaultier.

The singer wore one of the night's more colorful dresses, opting for a leg-baring turquoise ombré Elie Saab Spring 2015 dress with fuchsia Guiseppe Zanotti heels and Lorraine Schwartz jewels.

The pop star, fresh off her Super Bowl halftime show performance, walked the red carpet in a sheer Zuhair Murad sheath dress with crystal-embellished fringe from the Spring 2015 couture collection. She paired it with satin Sophia Webster heels. Less noticeable, however, was her canary-yellow diamond Harry Kotlar ring, worth $2 million!

It was hard to see the singer underneath all the ruffles of her netted black Alexandre Vauthier party frock! The couture look was actually pulled from the designer's archives.

The star wore a sleek black cutout Alexandre Vauthier gown from the Spring 2015 couture collection.

The singer kept it casual in an Aritzia rainbow tie-dyed blazer and white pants from the brand's Spring 2014 collection.

It was all about the black for the singer, who chose a minidress with a sheer lace overlay and Simon G. jewels.

The singer, known for her avant-garde looks, opted to go a sexier route with a low-cut silver Brandon Maxwell gown, Stuart Weitzman sandals, and Lorraine Schwartz jewels.

The actress wore a long-sleeved black turtleneck dress with metal eyelets from the Mugler pre-Fall 2015 collection along with strappy heels.

The Oscar winner looked svelte in a strapless white Tom Ford dress, which was topped off with a Marli diamond choker.

The star wore an emerald green Balmain jumpsuit with a matching gold chain necklace, ​Vhernier earrings, Jimmy Choo pumps, and a laminated suede Paula Cademartori clutch.

The country singer gave her basic black Gabriela Cadena column dress a pop of color with hot-pink straps, Jennifer Fisher jewels, and a neon star-print Kotur clutch with sound-activated lights.

The rapper looked decidedly demure in a fringed black Tom Ford gown with Jacob & Co. diamond and platinum rings.

The singer barely showed any skin whatsoever in a long-sleeved metallic gown with a high neckline and a coordinating silver vintage Daniel Swarovski clutch.

The actress wore an embellished black bow halter dress with Jennifer Meyer jewels.

The singer-turned-actress hit the red carpet in a sexy cutout coral Emilio Pucci gown with silver hardware accents at the bodice. Her white gold and diamond earrings were by Vhernier.

The pop singer opted for a white Versace gown with cutouts, a high slit, and chain mail. She topped it off with white Versace pumps.

The singer looked classic in a gray Dolce & Gabbana tuxedo.

The model wowed in a white Emilio Pucci dress, from the resort 2015 collection, with sheer paneling down the sides. She completed the sleek look with Jimmy Choo sandals.

Alongside dancer Maddie Ziegler, Sia wore a black custom Giorgio Armani cape over black cigarette pants.

The Jane the Virgin actress wore a white dress with teal lace embroidery and zipper trim by Christos Costarellos and yellow gold earrings by Carrera y Carrera.

The singer and coach on The Voice showed off her shoulders in a strapless black Atelier Versace jumpsuit. We particularly loved the asymmetrical top detailed with black netting and nude underlay.

The actress wore a striped Vivienne Westwood Resort dress and a gold Jennifer Fisher cuff. She also stacked on a handful of rings by Amrapali, Carrera y Carrera, Leticia Linton, and Jack Vartanian.

The singer looked ladylike in a champagne Alberta Ferretti gown.

The British crooner kept things simple in a well-tailored black tux.

The pop icon didn't disappoint in an ultrasexy corseted ensemble — complete with black leather gloves, crystal embellishments, and a matador hat custom-made by Givenchy Haute Couture with shoes by Sophia Webster.

Este, Danielle, and Alana Haim coordinated in black and white ensembles – all accented with Neil Lane jewels. Este's sheer black dress was from the Chloé resort 2015 collection.

The socialite stayed true to her signature style of showing lots of skin by wearing a glittering Yousef Aljasmi gown with an illusion neckline and cutouts.

The actress showed skin in a sheer, floral-print Yanina dress with pointed white Sophia Webster heels, AS29 earrings, and a black Carrera y Carrera statement ring.

Next to designer Helen Lasichanh's tracksuit onesie, the star's trademark tuxedo shorts didn't look that surprising!

The singer wore a wild look from the Moschino Spring 2015 collection, complete with an all-white tuxedo, pale pink faux-fur stole, bright pink bow tie, and matching glittery mules.

The R&B singer showed some leg with a black chiffon gown and keyhole neckline.

The star showed her curves in a formfitting black-and-white gown by Christian Siriano. Her diamond earrings and rings were by Borgioni.

While the actress wore a simple black DSquared2 sheath with velvet bow, Nick opted for a gray tartan Versace suit and crisp white sneakers.

The singer looked stunning in a black tulle pearl-embellished fishtail gown with organza and velvet flowers from the Ralph & Russo Fall 2015 collection. Her diamond ear cuff was by Sutra.

The E! news correspondent went for black pants and a sheer embellished top, and she carried a Rauwolf clutch. She accented the sparkly look with Suzanne Kalan diamond earrings and diamond rings by Le Vian and Chimento.