AceShowbiz - Demi Lovato's latest Halloween costume will creep you out. The 27-year-old actress/singer turned into evil clown Pennywise from Stephen King's novel "It", who is portrayed by Bill Skarsgard in the 2017 movie adaptation and its sequel "It Chapter Two", for her Halloween party on Saturday, October 26.

The "Camp Rock" star wore a sexy ruffled dress that showed plenty of cleavage with a red wig and red contact lenses. She was almost unrecognizable with her clown makeup as she arrived at the HYDE Club in Los Angeles where the party was held.

Inside the venue, Demi posed with her mother Dianna De La Garza, who matched the Disney Channel alum's transformation by dressing up as Georgie, the ill-fated younger brother of Bill Denbrough and one of the shape-shifter clown's victims. Dianna sported a yellow raincoat and held a red balloon and a paper boat.

Sharing her picture with her mother, Demi captioned it, "My mom is the best," adding a face with tears of joy emoji. She also posed with another Pennywise, puckering up her lips as if she was going to kiss the evil clown.

Also spotted at the party were Paris Hilton, who dressed up like a sexy schoolgirl, and Larsa Pippen a.k.a. Larsa Younan who channeled a sexy military officer. Jason Derulo and Alexia Duarte also attended the bash but didn't seem to dress in any specific costume.

Demi kicked off her Halloween celebrations on Friday, October 25 by dressing up as Marie Antoinette. The "Here We Go Again" songstress took to her Instagram page to share photos of her wearing a corseted mini dress with a blond wig and pearls. She also sported a blonde wig and white powdered makeup.

"Halloween round 1... I told y'all I don't play on Halloween!! It's my time to shine," Demi captioned the snap, before giving a credit to her "glam team."