Sarah Michelle Gellar & Freddie Prinze Jr. Go 'Back to the Future' for Halloween!

Sarah Michelle Gellar and Freddie Prinze Jr. totally nailed their Halloween costumes!

The 42-year-old actress took to Instagram on Thursday (October 31) to share a photo of she and the 43-year-old actor dressed up in their Back to the Future-themed costumes.

PHOTOS: Check out the latest pics of Sarah Michelle Gellar

Sarah sported a red vest and Nikes as Marty McFly while Freddie rocked a gray jumpsuit and crazy, gray-haired wig as Dr. Emmett Brown.

“Great Scott!!!” Sarah captioned the below photo.

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