Pharrell, 2014(01 of20)
Open Image ModalPharrell's Vivienne Westwood hat will definitely go down in history as one of the Grammy's wackiest, strangest, and most memorable looks. And if anyone can pull it off, it's Pharrell. (credit:Kevin Mazur via Getty Images)
Alicia Keys, 2002(02 of20)
Open Image ModalWe're not really sure what Alicia Keys was going for with this high-meets-low fashion look, but we do know that it probably made for great water cooler chatter the next morning. There's just so much happening here! We, and Alicia, will likely never forget this look. (credit:SGranitz via Getty Images)
M.I.A., 2009(03 of20)
Open Image ModalM.I.A. was very pregnant at the 2009 Grammy Awards, and she made sure that everyone knew it. She wasn't afraid to show off the bump, and she did so in typical M.I.A. style. (credit:Gregg DeGuire via Getty Images)
Nicki Minaj, 2012(04 of20)
Open Image ModalNever one to shy away from controversy, Nicki Minaj arrived wearing a custom Versace cloak that referenced the religious attire of the Pope. Because of course she did. (credit:Steve Granitz via Getty Images)
Adele, 2012(05 of20)
Open Image ModalAdele's sparkly black gown may have been simple, but it's classic and gorgeous. It also proved to be a good luck charm for the singer, who won an amazing six awards that night. (credit:Steve Granitz via Getty Images)
Katy Perry, 2014(06 of20)
Open Image ModalKaty Perry arrived at last year's awards show in this floaty Valentino gown, which featured a skirt covered in music notes. (Fitting, right?) The singer managed to make a statement without going overboard, making this dress one we'll never forget. (credit:Steve Granitz via Getty Images)
Prince, 1988(07 of20)
Open Image ModalPrince is definitely not one to back down from wearing a bold outfit. Case in point: this polka dot number from 1988. Even his heels match the suit! Perfection. (credit:Ron Galella via Getty Images)
Kelly Rowland, 2013(08 of20)
Open Image ModalBeyonce may be the queen, but her former Destiny's Child bandmate Kelly Rowland stole the show with this ultra sexy number. The strategically placed sheer panels are scandalous yet still manage to look classy on the singer. Love it. (credit:Steve Granitz via Getty Images)
Cher, 1974(09 of20)
Open Image ModalHow amazing does Cher look here though? The flowy white shirt over a bedazzled bandeau is really a look that only the iconic songstress can pull off. And she just does it so well. (credit:Michael Ochs Archives via Getty Images)
Miley Cyrus, 2010(10 of20)
Open Image ModalRemember when Herve Leger bandage dresses were all the rage? So does Miley! Back in 2010, the pop star arrived on the red carpet wearing one of her own, proving to the world that she wasn't a little girl anymore. (Side note: RIP hair extensions!) (credit:Jon Kopaloff via Getty Images)
Taylor Swift, 2013(11 of20)
Open Image ModalLady Gaga, 2010(12 of20)
Open Image ModalWhen Gaga showed up wearing this stellar Armani Prive creation back in 2010, it was the talk of the night. Was it good? Bad? Weird? We're still not quite sure how we feel about it, but we do know that it's a look we'll always remember. Those crazy shoes and spiky orb just add to the wackiness. But, such is Gaga. (credit:Gregg DeGuire via Getty Images)
*NSYNC, 2001(13 of20)
Open Image ModalOh, *NSYNC, What would the Grammys have been without you? Just look at those glasses! And all the frosted tips! And the velvet overcoat! This group look is forever ingrained in our minds. (credit:Ron Galella via Getty Images)
Christina Aguilera, 2001(14 of20)
Open Image ModalAnd then there was Christina Aguilera (not yet Xtina). That hair! That dress! The cleavage! How could we forget this look? (credit:Ron Galella, Ltd. via Getty Images)
Britney Spears, 2000(15 of20)
Open Image ModalLeave it to Britney to bring a little southern glamour to to the red carpet. Just look at how fresh-faced she was here! Just, love. (credit:S. Granitz via Getty Images)
Jennifer Lopez, 2000(16 of20)
Open Image ModalWe only have one thing to say about JLo's now-iconic Versace dress: #NEVERFORGET. (credit:J. Vespa via Getty Images)
Rihanna, 2013(17 of20)
Open Image ModalShe may be known for her wild style and bad gal antics, but Riri looked every bit the glamazon in this gorgeous red Alaia gown which she sported back in 2013. Everything about the look is perfect -- from her loose waves to the matching red lipstick. It's by far one of her classiest looks, and it will forever be one of our favourites. (credit:Steve Granitz via Getty Images)
Beyonce, 2014(18 of20)
Open Image ModalOur list just wouldn't be complete without queen Bey. Last year, she somehow managed to make illusion mesh look great (of course), even though we thought we were tiring of the trend. And of course, her bleached out bob caused a commotion all on its own. (credit:Steve Granitz via Getty Images)
Michael Jackson, 1984(19 of20)
Open Image ModalWe have no doubt in our mind that the King Of Pop outshone everyone at the 1984 awards show. Just look at that jacket! (credit:Ron Galella via Getty Images)
Kim Kardashian, 2011(20 of20)
Open Image ModalKim K looked smokin' hot in this gold number! It's one of her most glamourous looks to date, but we wonder if Kanye would approve... (credit:Gregg DeGuire via Getty Images)