It's the time of the season, when stars step out in style for Halloween.

And with the holiday just days away on Oct. 31, celebs like Kelsea Ballerini are already kicking off the celebrations. The "Penthouse" singer dressed up as cowgirl Barbie—a la Margot Robbie—as she hosted a Halloween party in New York City in partnership with the Original Donut Shop Coffee Oct. 25.

"HI BARBIE," Kelsea captioned Instagram photos of her pink ensemble. "HAPPY (early) HALLOWEEN."

She was accompanied by her boyfriend, Outer Banks actor Chase Stokes, who did not appear to be wearing a costume, instead opting for a white printed hoodie, blue jacket and jeans.

An speaking of couples, Paris Hilton and Carter Reum did coordinate their Halloween styles at the annual Casamigos Halloween party Oct. 27. The Paris in Love star and her husband dressed up as her friend Britney Spears, wearing a flight attendant outfit from her 2003 music video "Toxic," while her husband wore a pilot's costume.

Kourtney Kardashian also dressed up like a fellow celeb—her own sister, Kim Kardashian. The pregnant Poosh founder wore her sibling's iconic floral Met Gala maternity look for a home photo shoot.

Meanwhile, fans are still waiting to find out the 2023 Halloween look for the OG Queen of Halloween, Heidi Klum, who's become known for her jaw-dropping costumes over the years. The America's Got Talent judge takes the holiday so seriously, she began brainstorming her 2023 back in December.

For Halloween 2022, the supermodel turned heads when she transformed into a worm for her annual holiday party. As for where the outfit ranked on her list of Halloween costumes? "This is one of the top ones," Heidi told reporters at the celebration, "just because it's so unusual and so big in size and it's just weird."

While we await Heidi's 2023 Halloween costume, let's take a look at more stars dressing up in costumes this year...

The Hills alum appears at the annual Casamigos Halloween party.

The Poosh founder recreates her sister Kim Kardashian's iconic Met Gala 2013 maternity style.

The Kardashians star and her son made major moo-ves dressed as cows at a pumpkin-carving bash.

The model vamped it up for a Halloween dinner party.

The "Penthouse" singer went as Barbie from the Barbie movie for The Original Donut Shop's Halloween party Oct. 25.

The couple was magical as Wicked's Elphaba and Glinda.

The Glee star went as a Hufflepuff student from Harry Potter to her son's school dress-up day.

The Last of Us star avoids zombies during a visit to Universal's Halloween Horror Nights.

It's knives out for the star's Halloween Horror Nights trip.

The Vanderpump Rules star and What We Do in the Shadows actor are scared stiff during their Universal Studios outing.

The Oscar winner holds his own amongst a crowd of creepy clowns.

The father-daughter duo rock out at Halloween Horror Night in Hollywood.

The couple enjoys a frightening date night at Universal Studios Hollywood.

The JoBros' youngest sibling has a scary good time at Halloween Horror Nights.

THe star and her son Sebastian get spooked at Halloween Horror Nights at Universal Studios Hollywood.

The Bel-Air star is scared silly at Halloween Horror Nights at Universal Studios Hollywood.

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