We're pretty sure Olivia Wilde comes in first place for celebrating Harryween.
For this year's spooky Halloween weekend, the 37-year-old Booksmart director dressed up as Dolly Parton and shared the cute transformation to Instagram Stories on Oct. 30. Captioning one selfie, "I [love] you @dollyparton," Olivia is seen rocking a curly blonde wig, complete with a red floral hair accessory. And as for her makeup, she committed to the country star's look by wearing bright blue eyeshadow and red lipstick.
In another Instagram Story clip, it's clear that Olivia enjoyed being in character, since she shared a short video of her trying on her fake "Dolly boobs," to which she jokingly said, "I think it brings a little flair to my personality."
And to top it off, the actress also hopped on an exercise bike in her getup, which included a floral-print shirt tied at the waist and denim capris, while listening to Dolly's hit, "9 to 5." She captioned that hilarious clip of her pretending to work out while sipping on a beverage, "In my mind this is how she works out. Fell off shortly after."
Luckily for fans and concertgoers, Olivia took her temporary costume on the road for a bit to support boyfriend Harry Styles at his latest NYC concert later on that evening. The Don't Worry Darling director was spotted by a fan hanging out beside the stage while Harry (who dressed up as Dorothy from The Wizard of Oz) performed.
Since we can't get enough of seeing the stars dressed to the nines this past weekend, take it all in for yourself below:
"Hope you all had a great Halloween!" the supermodel shared. "Arrr from the Tampa Bay pirates!!!"
"Last night at MAGIC hour," Jessica captioned her Halloween post.
"A monster mash of love!" the best-selling author wrote on Instagram as her son Canon wore a T-Rex costume from Pottery Barn Kids.
"We decided to go as Sophia Grace & Rosie!" the viral stars wrote on Instagram. "#halloween #sophiagraceandrosie #ellen @theellenshow therealsophiagrace @nickiminaj."
The Today show meteorologist shows off her baby's Pottery Barn Kids costume while celebrating with Hoda Kotb's family.
"This was the first Halloween in which everyone participated and also the most incredible amount of work and energy for the mama," the former Real Housewives of Orange County star wrote. "Dark nights, candy, and streets with cars combined with 3 preschoolers is a recipe for stressful parenting. But we survived and the kids LOVED it."
The Call Me By Your Name singer kills it as the Harry Potter villain Voldemort.
"Power to the people," the Scandal star wrote while wearing Privé Revaux sunglasses. "My #Halloween attempt (with the help of #AngelaDavis) to remind you all that Election Day is in 2 days! Use your power. Use your voice. Use your vote!!!!"
"It looks so good!" the former Keeping Up With the Kardashians star said of her space cowboy glam, courtesy of make-up artist Ash Holm.
"I'm not sure what 3 out of 4 us are supposed to be, but HAPPY HALLOWEEN!" the American Idol winner wrote online. "Be extra spooky and extra safe out there!"
"Leo as Dash ARE YOU KIDDING ME?!!" the Dancing With the Stars pro asked.
"Happy Halloween from Charlie and Maverick. #topgun," the country singer shared while posing with her husband Brendan McLoughlin.
The TikTok star channels her inner Lady Gaga with Privé Revaux eyewear.
"We're off to see the Wizard! #happyhalloween," the Bachelor in Paradise stars captioned on Halloween night.
"My kids really thought they were gonna beat me at Halloween," the Grammy winner shared. "30 min later I emerged from my closet to remind them who their pops is [goat emoji]."
"Back from the dead," the newly engaged Bachelor in Paradise stars wrote online.
"It's giving… Cher," the Vanderpump Rules star wrote while posing with boyfriend Tom Sandoval.
"We went to SPACE tonight!!!!" the Watch What Happens Live host revealed as his son wore a Pottery Barn Kids costume. "Also, he LOVES lollipops! #Halloween."
"It's-a Mario time!" the Teen Mom OG star wrote on Instagram.
"Happy Halloween!!!!" the Million Dollar Listing star wrote. "We ain't clowning around when it comes to selling houses...."
"Happy Halloween from Rip Beth and John," the country singer wrote on Instagram.
"I vaxed a girl and I liked it," Orlando wrote while dressed as Dr. Anthony Fauci.
With help from Kiersten Stevens, this family Halloween costume is legendary.
And the award for best Grinch costume goes to this Grammy nominee!
"From Gladiators to our true identities…..'Tweedle Dee and Tweedle Dum.' Halloween part 2!" Caroline Bryan revealed on Instagram.
"Flavortown USA #happyhalloween," the country singer wrote while portraying Guy Fieri.
"Feliz día de los muertos," the couple wrote on Instagram.
It's a girls' night out at the star-studded Booby Tape Halloween party in West Hollywood.
"Super Hero's protect this house," the country singer wrote online.
"Somebunny had to do it. Happy DOLLYween, y'all!" the country singer wrote while posing in front of decor from Glitter & Lightning.