August 6, 2026, 11:21 AMSydney Towle, a 26-year-old who documented her battle with a rare bile duct cancer on social media, died on Wednesday.Towle's death was announced in a post on her social media channels Thursday.Sydney Towle speaks onstage at "Connection in the Age of Disruption" during The Business of Beauty Global Forum 2025, June 10, 2025 in Napa, Calif.Monica Schipper/Getty Images"An endless ray of sunshine. A daughter, sister, friend to so many," the post read.Popular ReadsThis is a developing story. Please check back for updates.