Photos: Best celebrity costumes of Halloween 2017
Heidi Klum dresses as the werewolf from Michael Jackson's "Thriller" at the Magic Hour Rooftop Bar & Lounge on October 31, 2017 in New York City.Slaven Vlasic
"Good Morning America's" Michael Strahan dresses as Thor.Paula Lobo
Al Roker as Willie Nelson performs during Today's Halloween Extravaganza 2017 at Rockefeller Plaza on October 31, 2017 in New York City.Nicholas Hunt
"Good Morning America's" Ginger Zee dresses as Baby Groot from "Guardians of the Galaxy."Paula Lobo
Heather Graham attends Heidi Klum's 18th annual Halloween Party presented by Party City at the Magic Hour Rooftop Bar & Lounge on October 31, 2017 in New York City.Slaven Vlasic
Savannah Guthrie as Kenny Rogers and Matt Lauer as Dolly Parton perform during Today's Halloween Extravaganza 2017 at Rockefeller Plaza on October 31, 2017 in New York City.Nicholas Hunt
Cindy Crawford (L) and Rande Gerber attend Casamigos Halloween Party on October 27, 2017 in Los Angeles, California.Michael Kovac
Mark Ruffalo poses with "Good Morning America's" Robin Roberts, Lara Spencer, Amy Robach and Michael Strahan.Paula Lobo
Carson Daly as Billy Ray Cyrus, Megan Kelly as Shania Twain, Savannah Guthrie as Kenny Rogers and Matt Lauer as Dolly Parton, Kathie Lee Gifford as Miley Cyrus, Hoda Kotb as Blake Shelton, Al Roker as Willie Nelson and Billy Ray Cyrus perform during Today's Halloween Extravaganza 2017 at Rockefeller Plaza on October 31, 2017 in New York City.Nicholas Hunt
"Good Morning America's" Lara Spencer dresses as Black Widow from "The Avengers."Paula Lobo
Jon Batiste attends Heidi Klum's 18th annual Halloween Party presented by Party City at the Magic Hour Rooftop Bar & Lounge on October 31, 2017 in New York City.Slaven Vlasic