Whether they were onstage or just celebrating with friends, celebs rang in the new year by rocking everyone's favorite annual end-of-year trend: plenty of glitter and glitz!
Demi Lovato oozed sex appeal in a sequined royal blue jumpsuit with a plunging neckline, which she vamped up with big curls and a smoky eye while performing at Fontainebleau Miami Beach. Later, she partied at LIV for Travis Scott presented by Monster, in Miami, Florida, on Sunday night.
Kelly Clarkson glistened in gold when she hit the stage in Los Angeles for Dick Clark's New Year's Rockin' Eve with Ryan Seacrest 2018.
For her New Year's Eve performance at Caesar's Palace in Las Vegas, Fergie added a little sparkle by topping her black leotard with a blazer outfitted with crystals on the lapels.
Nearby at The Colosseum at Caesars Palace, Celine Dion shone brightly in an eye-catching silver long-sleeved mini.
And we all know Mariah Carey brought it and drank her tea too when she returned to Times Square after last year's difficult outing.
Plus, her very festive pre-show gold jacket was pretty on point, too.
There were plenty more party-ready outfits to be had as we wished 2017 adieu. Check out even more amazing looks as celebs rang in 2018:
Scroll through the gallery below to see some of our favorite party looks from this holiday season.