From Gwyneth Paltrow's Head in a Box to Kim Kardashian as Cher, This Year's Best Halloween Costumes

Several celebs into the Halloween spirit a bit early as they donned clever costumes for the festivities over the weekend. 

Among them was Kim Kardashian, who transformed into her idol, Cher.

Her BFF Jonathan Cheban was Sonny Bono. Her transformation caught the attention of Cher herself, who tweeted: “You look beautiful.”

 
The mom of two wasn’t the only star channeling another star for Halloween. 

Olivia Newton John's character from Grease is the inspiration for model Joanna Krupa's costume.  She sure makes one electrifying Sandy. 

Kristen Bell, who voiced Princess Anna in Frozen, posted a photo dressed as her sister in the animated film, Elsa.  

When your daughter demands you both be Elsa for Halloween…you grin and forking bear it,” she posted on social media. 

Gwyneth Paltrow channeled her character in the movie Se7en, in which her decapitated head was discovered in a box. 

Paltrow, who starred in the 1995 thriller with then-boyfriend Brad Pitt, got her current beau, TV producer Brad Falchuk, in on her costume. 

He was dressed as serial killer John Doe, who was portrayed onscreen by Kevin Spacey.