Paris Hilton transformed into Miley Cyrus for Halloween.

The 32-year-old reportedly dropped over $5,000 at Trashy Lingerie in Los Angeles on several ensembles, including a custom made jungle woman get up, similar to Katy Perry's video for "Roar," to wear for Halloween, according to TMZ's insider sources.

The heiress also purchased a replica of the teddy bear outfit Miley Cyrus twerked in at the recent MTV Video Music Awards, which she wore to the annual Playboy Mansion party on Saturday.

Hilton paired her outfit with a pair of grey platform heels and red heart-shaped glasses, as well as a bejeweled cuff bracelet, silver ring, choker necklace and stud earrings. She was also carrying a small silver bag on her shoulder and had her blonde locks up in a couple of twisted buns, in ode to Miley herself.

Hilton, who recently released her new single "Good Time," tweeted about the Playboy Halloween party on Sunday.

So much fun last night! Loved rocking my @MileyCyrus costume! Such a cute fun look! #TwerkOrTreat ;) https://t.co/1BWOW9pEMp

— Paris Hilton (@ParisHilton) October 28, 2013

At the same party, Playboy Founder Hugh Hefner and wife Crystal Harris dressed as Robin Thicke and Miley Cyrus.

Even legendary comedian Joan Rivers got in on the act and dressed up as a demonic looking Miley Cyrus on her E! show "Fashion Police" for its Halloween special.

In a Rolling Stone interview last month, Cyrus addressed the costume that inspired Hilton and so many other adult Halloween enthusiasts.

"I know what I'm doing. I know I'm shocking you. When I'm dressed in that teddy bear thing, I think that's funny," she told the magazine. "I was saying yesterday, I had this obsession about this character that's like an adult baby. Like, if you see a baby do something like that, it's so warped and weird, but there's something creepily hot about it. So when I'm in that teddy bear suit, I'm like a creepy, sexy baby."