Kendall Jenner turns 25 years old on November 3, so, on Halloween, she threw a giant party in the middle of a pandemic that is currently experiencing a record surge in COVID-19 cases. The party, which was attended by Hailey Bieber, Kanye West, Kim Kardashian West, Scott Disick, Kylie Jenner, Travis Scott, Jaden Smith, Paris Hilton, Justine Skye, Quavo, Winnie Harlow, Justin Bieber, and more, was at Harriet's Rooftop at Hotel 1 in West Hollywood.