See all of the best looks from the American Music Awards red carpet

Suits! No shirts! Sparkles! These were just a few of the major style themes at Sunday's American Music Awards. The stars came dressed to impress for one of music's biggest nights, and these are the 27 looks we can't stop thinking about.

Before making a powerful style statement on stage during the show, Swift showed up to the AMAs red carpet in a sparkly, green high-low gown and thigh-high boots.

Underwood brought the glitz and the glam in a sequined one-shoulder gown with a major slit that showed off her toned gams.

The powerhouse singer killed it on the red carpet in a orange, ruffled one-shoulder minidress and the tiniest white purse.

Lovely in lime! Gomez celebrated her return to the music scene in a lime minidress and matching pumps.

Cabello looked dreamy in a nude sweetheart-neckline gown, featuring leaf detailing and plenty of tulle. She topped the look off with a sideswept braid and glowing makeup.

The singer rocked a purple suit and went sans shirt, much to the delight of his fans.

The "Crazy Rich Asians" star sported a frilly, pastel-pink dress with a crisscross detail at the bust and an open back. She paired her dress with white, pointy pumps and Princess Leia-inspired buns.

Aguilera stood out on the red carpet in a white, embellished frock, featuring bold shoulders and a hood. The singer paired the daring ensemble with white boots and several necklaces.

Ciara looked ultra colorful in a bright blue blazer, darker blue pants and a bold necklace. And oh, right, she didn't wear a shirt!

A glowing Dewan showed off her baby bump in a pretty, pink gown with the most adorable bow in the back.

No shirt, no problem! Ballerini joined Ciara and Mendes in the sans-shirt club and rocked a bedazzled red and silver pantsuit and sparkly pumps.

The rapper certainly looked unique in a lime-green suit, zebra-print top, matching gloves and some interesting shoes.

Halsey opted for yet another floral look Sunday night! The singer stunned in a ruffled gown, sleek sandals and colorful eye makeup.

Klum played with texture in a minidress, featuring a glittery bust and a feathered skirt.

Never one to disappoint on the red carpet, Porter sported a bold, white ensemble with a statement cape and a patterned hat and shoes.

Simply dazzling! Jamil brought plenty of sparkle to the red carpet in a zebra-print gown with a plunging neckline.

Diplo added a country flair to Sunday night's American Music Awards in a tan, embroidered suit, a cowboy hat and sleek shoes.

Suits were a theme of the night! The supermodel paired her camel-colored one with a hat, edgy gloves and a bra.

The rising star went for an air of mystery with a hat that covered her face and a matching baggy, plaid Burberry top and pants.

Plenty of plaid! The singer paired his printed suit with a cowboy hat and shiny dress shoes.

The singer-songwriter made a statement on the red carpet in a rose-gold silk top with bell sleeves and a bedazzled, black skirt with a touch of tulle and a dramatic train.

Rhett gave the classic suit a twist! He rocked a floral-printed ensemble with a complimentary purple T-shirt underneath.

Curtis kept things classy with a black sweater and slacks. Black pointy pumps and glowy makeup gave her an effortless yet sophisticated vibe.

The actress stunned in a black sparkly gown with a dramatic keyhole cutout and cold shoulder.

Abdul wowed in a black gown with a thigh-high slit and embellished details. Beachy waves, a glitzy clutch and shoes with metallic details completed her ensemble.

Platt wore burgundy, plaid trousers with a green leather jacket and white button-down shirt.

The ballerina rocked a suit jacket-inspired gown with a plunging neckline and thigh-slit. Matching white strappy sandals, dangly earrings and a slicked-back hairstyle finished off her style for the evening.