If there's an award show where you can expect celebs to go all out, it has to be the American Music Awards.
Over the years, the biggest names in music and pop culture have made the special night as much about fashion as music. That's why before tomorrow's big ceremony, we're looking back at the craziest looks that have hit the AMAs carpet in the past.
Though a popular Halloween costume now, the most memorable AMAs ensemble of all time has to be Britney Spears and Justin Timberlake's denim-on-denim look in 2001. Joining the duo that year in making fashion history was girl group Destiny's Child with their matching groovy costumes.
As celebs continued to show off more iconic throughout the years, Lady Gaga found a way to do things a little differently. The two-time American Music Award winner entered the 2013 award's red carpet on a white horse dressed in a Game of Thrones-like dress.
With an all-star line-up this year including Lizzo, Billie Eilish and Camila Cabello, it's sure to be an unforgettable night. Plus, Taylor Swift will be honored with the Artist of the Decade award to close out a remarkable year for the star.
Before the show begins, however, you have to look back on a few unforgettable looks in the gallery below.
When you've already made fashion history by wearing a meat dress, the only thing left to do is enter on a human-operated horse. The renowned singer is never one to miss out on an opportunity to stop the show!
As if this pastel pink dress wasn't enough to make the electropop musician to make a statement, she added this controversial latex mask to the ensemble.
One of the rapper's most iconic outfits is this bright blue suit he sported at the 2018 awards ceremony. The red solo cup and sparkly silver shoes top the outfit off with the perfect amount of wacky.
The "Whip My Hair" singer rocked this gray-and-yellow piece at the 2010 AMAs after a year of celebrating the success of her own music.
Why wear a shirt when you can just paint one on? The YouTube star put up a real show on the 2014 AMAs carpet showing off his abs and multi-colored hair.
This trio was looking fly in their coordinating outfits for the 2013 AMAs. There's certainly nothing like a girl group, especially one that proudly rocks all white with a pop of glitter.
We can't decide what's more wild about this 2010 VMA look: Her Mohawk hairstyle, her VHS-tape dress or her studded eyebrows?
The famous Hollywood couple made fashion history in 2001 when they stepped onto the AMA red carpet in coordinating denim-on-denim ensembles.
The iconic girl group was known for their matching outfits and these pink swirl-patterned looks from the 2001 awards are looks to remember.
Channeling her all-black 1985 AMAs outfit, Diana wore a crinkled black floor-length strapless Vivienne Westwood dress with a massive feathery head ornament to the 2017 awards.
The rapper was sure to stand out in this bold neon green gown she wore to the 2012 AMAs.
This is at the 2014 VMAs, but the see through fishnet dress is giving us major Rose McGowan 1998 VMA vibes!
The World of Dance judge's 2014 wrap-around Reem Acra dress is one of her sexiest AMA looks.
Halsey was a red carpet rebel in this white punk-inspired jumpsuit at the 2016 AMAs.
As a new artist in 2017, Julia was right to make herself stand out in this bold Phuong My dress.
This 2010 AMA look is one of Nicki's wildest to date! The coral-colored dress features an extravagant gold skeleton-style structure including a ribcage design.
This metallic silver mini dress seen at the 2015 awards was almost as sassy and fun as the Pitch Perfect star.
Some might say this plaid number isn't quite glam enough for the event, but we applaud the singer for her bold ensemble on the 2017 red carpet.
The talk show host's 2016 AMA dress looks like a middle school art project.
Matching head to toe, the rapper rocked a red and yellow bedazzled Adidas sweat suit to the 2003 AMAs.
With two styles combined into one dress, it is hard to tell where the supermodel's dress ends and where it begins at the 2016 AMAs.
If anyone can make a casual floral maxi dress work on the 2016 red carpet, it's this supermodel.
Rita served as the (literal) bright spot of the evening in a highlighter Zac Posen gown at the 2014 awards.
Chrissy stunned in one of the most daring slits at the 2016 show and we absolutely love it!
For the 2016 AMAs, Janelle took referee stripes to a whole new level in this classy, '50s inspired AMA look.
The actress' opted for a wildly short floral baby doll dress for the 2016 AMAs.
Mark your calendars! The 2019 American Music Awards, live from the Microsoft Theater in Los Angeles, airs Sunday night at 8 p.m. on ABC.