In September, the America's Got Talent judge gave fans a sneak peek of what she'll be wearing at her annual fright fest, posting a video of what appeared to be a prosthetics mold with the caption, "#HeidiHalloween is starting to take shape..."

More recently, she shared a photo of herself in a brown compression bodysuit meant to be worn under special effects makeup.

"There's a clue here," she captioned her Oct. 7 Instagram post "but I just can't put my finger on it."

While you're busy pondering what you'll be dressing up as this year, keep reading to see how your favorite celebs are already celebrating the holiday.