It's finally Halloween, but for some — celebrities included — the celebrating began as early as the weekend ahead of the spookiest holiday of the year. Starting Saturday, celebs started letting the good times roll, busting out their best 2018 costumes for parties, events and more. From current pop-culture icons including Game of Thrones and Black Panther characters to blasts from the past including cartoon characters, iconic celebrity looks and vintage-inspired career-wear, celebrities pulled out all the stops this year. They got super-creative and super-into their costumes, and we are so grateful they did.
While we're sure to see even more great Halloween costumes in the next few days — weeknights be damned — here are some of the best we've seen so far. We're still waiting for big reveals, like Heidi Klum's 2018 costume, but in the meantime, we're pretty obsessed with what these celebrities flaunted for their spooky weekend celebrations.
Heidi Klum, otherwise known as the unofficial queen of Halloween, went all out as Princess Fiona from Shrek.
Justin Timberlake & Jessica Biel
Justin Timberlake and Jessica Biel donned impressive Lego Batman Movie ensembles with their three-year-old son, Silas.
Neil Patrick Harris & David Burtka
Neil Patrick Harris and husband David Burtka are known for getting in the spooky spirit, and this year they did not disappoint. The creative pair and their eight-year-old twins, Harper Grace and Gideon Scott, dressed up as ghosts from Disney World's The Haunted Mansion ride.
Mindy Kaling kept it simple as a bottle of mustard alongside her "little lion," daughter Katherine.
Chrissy Teigen & John Legend
How could you not love these two? Teigen and Legend channeled Queen Elizabeth and Prince Philip, but unfortunately, the adorable couple never made it out of the house according to Legend.
Beauty mogul Kylie Jenner took a page out of Beyoncé's book (circa 2016) by transforming herself into a vintage Barbie — complete with box.
Meanwhile, Queen Bey broke the mold once again by totally transforming herself into another iconic figure in entertainment: Toni Braxton. Or in Bey's case, "Phoni" Braxton.
Kelly Ripa & Ryan Seacrest
Leave it to Kelly Ripa and cohost Ryan Seacrest to turn the studio into one big I Dream of Jeannie lamp. Another year of killin' the Halloween costume game in the books!
Bill & Giuliana Rancic
Bill and Giuliana Rancic rocked what could very well be this year's buzziest couples costume: Jack and Ally from A Star Is Born.
When in doubt, go for the Halloween staples, right? Mariah Carey keeps it classic in a sexy nurse costume alongside Bryan Tanaka's shirtless doctor.
The Today team embraced the '80s this year for their eclectic yet coordinated costumes, and let's be real, they nailed it. Every single one of them.
The DWTS judges
Dancing With the Stars judges Carrie-Ann Inaba, Bruno Tonioli and Len Goodman all dressed up for this week's DWTS episode in the Halloween best. Inaba looks like the chicest Morticia Addams, Tonioli was our dashing Prince Charming and Goodman sported a cape to show he'd gone the Dracula route.
New mama Khloé Kardashian couldn't resist a bit of mother-daughter dressing up for baby True's first Halloween. And while we think these two make a pretty perfect unicorn pair, Kardashian hinted on Insta that she has more elaborate costumes yet to come.
Sarah Michelle Gellar
'90s sweetheart Sarah Michelle Gellar donned a Harley Quinn costume and struck a pose just for fans on Instagram a few days before Halloween.
Marcus Scribner, Tracee Ellis Ross & Anthony Anderson
Marcus Scribner, Tracee Ellis Ross and Anthony Anderson put on their Wakandan best for Halloween and dressed as three characters from Black Panther: Erik Killmonger (Scribner), Nakia (Ross) and the man himself, King T'Challa (Anderson).
Gabrielle Union threw it back to the '90s and dressed as No Doubt-era Gwen Stefani, specifically in the "I'm Just a Girl" music video. Rapper Lil' Kim also showed up at Union's party, truly bringing the '90s flavor to the night.
Joe Jonas & Sophie Turner
While Sophie Turner chose to dress as an elephant for Halloween, her fiancé, Joe Jonas, dressed as — well, her. Jonas rocked a red wig and full gown for his Sansa Stark costume, which as Entertainment Weekly notes may be the closest he gets to a cameo on the series, which ends next year.
Taraji P. Henson
Taraji P. Henson went as the titular character from the '70s police drama, Get Christie Love!
Sarah Hyland & Wells Adams
Sarah Hyland and Wells Adams rocked what is possibly the best couples costume ever: "Taco Belle." Hyland wore a taco costume complete with a Taco Bell hot sauce leotard underneath, while Adams dressed as the princess Belle from Disney's Beauty and the Beast.
Olivia Munn paid homage to Crazy Rich Asians with her costume, dressing as the character Peik Lin (played by Awkwafina in the film).
Nikki Bella & Brie Bella
The Bella twins dressed as a much creepier set of twins for their appearance on The Tonight Show with Jimmy Fallon: the iconic dead little girls in Stanley Kubrick's The Shining.
Ariel Winter and her boyfriend, Levi Meaden, transformed into Pamela Anderson and her ex-husband, Kid Rock, tattoos and all. "Don't worry," Winter wrote in her Instagram caption, "we're also concerned by the accuracy." She included a photo of Anderson and Kid Rock for comparison.
Zoë Kravitz dressed as a vampire who's just woken up, noting that nighttime is morning for these iconic and nocturnal blood-feeders.
Jessica Alba and Kelly Sawyer dressed as Bedrock best friends and neighbors, Betty Rubble and Wilma Flintstone, respectively. Yabba dabba doo!
Lisa Rinna & Harry Hamlin
Lisa Rinna wore her Edie Sedgwick best to a party with her husband, Harry Hamlin, who dressed as the artist Andy Warhol. Sedgwick was one of Warhol's "superstars," nicknamed "The Girl of the Year" in 1965 after starring in so many of his films.
George Clooney, Rande Gerber & Cindy Crawford
For the second evening of the two-night Casamigos Halloween Party, cofounders George Clooney and Rande Gerber dressed as copilots with Gerber's wife and former supermodel Cindy Crawford joining the party as their flight attendant. On the first night, Crawford and Gerber dressed as Debbie Harry and David Bowie, while their daughter, Kaia Gerber, dressed as Joan Jett.