Heidi Klum models a sheer lace bullet bra bodysuit for racy Instagram video

Heidi Klum led the stars already getting in the Halloween spirit and sharing their costumes ahead of the spooky holiday.

On Monday, the supermodel, 51, took to her Instagram Story shared a sexy clip of herself modeling a sheer, lace bodysuit with a bullet bra bust.

Ahead of her Halloween party and highly anticipated costume reveal, she showcased her sultry Dolce & Gabbana garb — leaving little to the imagination as she flashed her black bra. 

In the past, the Queen of Halloween had dressed up as in a peacock costume alongside nine acrobats and even a worm one time, but she said this year, everyone will 'never guess what this year has in store.'

Ahead of the holiday, many other stars took to social media to show off their costumes for Halloween weekend including Selena Gomez, Anne Hathaway, Lizzo and Sophie Turner. 

Klum's daughter Leni Klum also dressed up early for Halloween and channeled the blonde bombshell Pamela Anderson while her boyfriend Aris Rachevsky was musician Tommy Lee. 

The model, 20, wore a platinum blonde wig over her usual brunette locks and slipped into a black, latex corset for her costume. 

She also sported dark eyeliner and had a barbed wire temporary tattoo wrapped around her arm. 

Meanwhile, her boyfriend sported a black wig and also had temporary tattoos on his face as well as on his knuckles, spelling out his girlfriend's name.

For Halloween festivities over the weekend, Selena Gomez and her boyfriend Benny Blanco dressed up as Alice in Wonderland and the Mad Hatter from Tim Burton's 2010 adaptation.

For their couple's costume, the Only Murders in the Building actress, 32, slipped into a frilly, romantic babydoll dress and put on a blonde wig. 

She sported a black headband with a bow atop her head and completed her look with white, frilly socks and Mary Jane heels. 

And the producer put on a bright red wig with a top hat and had on a full face of costume makeup for his interpretation of the Mad Hatter.

Lizzo also dressed up ahead of the frightful holiday and showcased two fun costumes on social media. 

The rapper, 36, dressed up as the weight loss drug Lizzo from the satirical South Park episode about Ozempic. 

She also dressed up as 1-800-hunnybunny.com sculpture as she slipped into a super-cinched, white corset, painted her entire body a scarlet red color and threw on a bright blue wig. 

Sophie Turner dressed up as Trinity from the Matrix to celebrate Halloween with her gal pals.

From photos of their night out, the Game of Thrones actress was seen sporting a low-cut, latex jumpsuit and slim, retro sunglasses. 

She slicked back her hair into a polished updo and carried two replica weapons.

Anne Hathaway also dressed up in a spooky New York City-inspired costume for the holiday. 

She sported a 'Boo York City' shirt layered underneath a leather jacket. 

She also donned a platinum blonde wig with a Statue of Liberty hat and a pair of cobweb-inspired cat-eye sunglasses. 

She also wore pale face makeup teamed with dark eyeliner and a black lipstick for her costume.

For this year's holiday, Ice Spice dressed up as Leeloo — Milla Jovovich's character from the 1997 sci-fi movie, The Fifth Element. 

The rapper donned a bobbed wig and blue contacts for her costume as the orange-haired humanoid.

The Y2K hitmaker donned a white crop top with a plastic, orange vest leotard, which she layered over bronze, figure-hugging pants.

She completed her look with chunky combat boots and went to a convenience store to take photos of her costume to share online ahead of Halloween.