Ansel Elgort Pranked Jimmy Kimmel's Niece, and It's Absolutely Hilarious

During an appearance on Jimmy Kimmel Live, actor Ansel Elgort pretended to be a famous Hollywood makeup artist to prank Jimmy's 12-year-old niece, Allison, who's one of Ansel's biggest fans. Wearing a wig and some elaborate lion makeup, Ansel took on a hilarious German accent as he gave Allison a makeup tutorial. Before they could begin, though, Ansel insisted that they pray to the makeup gods together, holding her hands as he prayed for the power to make her look "fierce, fabulous, and fluorescent." As Ansel did her makeup, Allison sweetly told him that her favorite movie is The Fault in Our Stars, explaining that Ansel Elgort is her favorite person in the film. He laughed, making fun of himself as she kept talking about her crush. Watch the video to see the hysterical prank — and the amazing moment when she realizes that it's Ansel — then check out Ansel's cute pictures from his visit to the iconic The Fault in Our Stars bench in Amsterdam.