#SocialBite: Celebrities' Halloween: Keke Palmer as Aaliyah

LeBron James as Prince, Kim Kardashian as herself and more.

Wiz Khalifa - "Not a costume," he said.(Photo: Wiz Khalifa via Twitter)

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Wiz Khalifa - "Not a costume," he said.(Photo: Wiz Khalifa via Twitter)

Barack and Michelle Obama - Scandal! The White House gave the pope "Top prize" of the day.(Photo: The White House via Instagram)

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Barack and Michelle Obama - Scandal! The White House gave the pope "Top prize" of the day.(Photo: The White House via Instagram)

Photo by @obamawhitehouse via Photo: The White House via Instagram/Instagram

Usher - Don't. Say. Nuthin'.(Photo: Questlove via Instagram)

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Usher - Don't. Say. Nuthin'.(Photo: Questlove via Instagram)

Photo by @questlove via Photo: Questlove via Instagram/Instagram

Kim Kardashian - "Still fits..." she said.(Photo: Kim Kardashian via Instagram)

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Kim Kardashian - "Still fits..." she said.(Photo: Kim Kardashian via Instagram)

Photo by @kimkardashian via Photo: Kim Kardashian via Instagram/Instagram

Lolo Jones - "I'm gonna rebound from this injury like D.Rose," she wrote. (Photo: Lolo Jones via Instagram)

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Lolo Jones - "I'm gonna rebound from this injury like D.Rose," she wrote. (Photo: Lolo Jones via Instagram)

Photo by @lolojones via Instagram

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Anthony Anderson, Tracee Ellis Ross - Black-ish first family? You've got our vote.(Photo: Tracee Ellis Ross via Instagram)

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Anthony Anderson, Tracee Ellis Ross - Black-ish first family? You've got our vote.(Photo: Tracee Ellis Ross via Instagram)

Photo Not Available

Tamera Mowry - It's the Adam's Family look.(Photo: Tamera Mowry via Instagram)

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Tamera Mowry - It's the Adam's Family look.(Photo: Tamera Mowry via Instagram)

Photo by @tameramowrytwo via Photo: Tamera Mowry via Instagram/Instagram

Kevin Hart - ?Martin & Gina..... #NailedIt #DaaaammmmnnnnGiiiiinnnnnaaaaa #SteeeeeeeppppppGiiiiinnnnnnaaaa #GiveMeTheLushes #GrabMyEars #YouGoGiiiiirrrrrlllll #GinaGinaGinnnnnaaaaa ......All of these Hashtags are in my @martinlawrence voice"(Photo: Kevin Hart via Instagram)

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Kevin Hart - ?Martin & Gina..... #NailedIt #DaaaammmmnnnnGiiiiinnnnnaaaaa #SteeeeeeeppppppGiiiiinnnnnnaaaa #GiveMeTheLushes #GrabMyEars #YouGoGiiiiirrrrrlllll #GinaGinaGinnnnnaaaaa ......All of these Hashtags are in my @martinlawrence voice"(Photo: Kevin Hart via Instagram)

Photo by @kevinhart4real via Photo: Kevin Hart via Instagram/Instagram

Nia Long - "Me and my SUPERMAN 😘," she wrote.(Photo: Nia Long via Instagram)

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Nia Long - "Me and my SUPERMAN 😘," she wrote.(Photo: Nia Long via Instagram)

Photo by @iamnialong via Instagram

Jennifer Lopez - There's only one way to describe this look: "Haute couture skeleton."(Photo: Jennifer Lopez via Instagram)

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Jennifer Lopez - There's only one way to describe this look: "Haute couture skeleton."(Photo: Jennifer Lopez via Instagram)

Photo Not Available

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Chris Brown - Breezy went dressed up as... an extra for Tyga's new vid? (Photo: Chris Brown via Instagram)

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Chris Brown - Breezy went dressed up as... an extra for Tyga's new vid? (Photo: Chris Brown via Instagram)

Photo by @chrisbrownofficial via Photo: Chris Brown via Instagram/Instagram

LeBron James - King James reigns.(Photo: LeBron James via Instagram)

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LeBron James - King James reigns.(Photo: LeBron James via Instagram)

Photo by @kingjames via Photo: LeBron James via Instagram/Instagram