Gwyneth Paltrow Wins Halloween With 'Seven' Costume

What's in the box?!
Gwyneth Paltrow, Brad Pitt and Morgan Freeman in 'Seven' (1995)   |   New Line Cinema/Photofest
What's in the box?!

The holiday hasn't even officially happened yet, but Gwyneth Paltrow has won Halloween this year.

On Sunday, the actress posted a photo of herself in a costume only she could pull off: her head in a box, in a reference to the 1995 thriller Seven.

In the Brad Pitt and Morgan Freeman starrer, Paltrow plays Tracy Mills, wife of Pitt's detective David Mills. Tracy is murdered by John Doe (Kevin Spacey), a serial killer who uses the seven deadly sins to pick victims. Tracy becomes his second-to-last victim, her head delivered in a box to the officers at the climax of the film.

Pitt's pleading "What's in the box?!" has become a pop-culture staple.