HOUSTON, Texas (WKRC) – Post Malone gave a generous $20,000 tip to a single mom working at a bar on Christmas Eve. According to Music Mayhem, Post Malone, born Austin Richard Post, gifted a struggling single mother $20,000 on Christmas Eve. The mother, 36-year-old Renee Brown, spoke exclusively to Music Mayhem, telling the outlet that she was left speechless and in tears after receiving the gift from Post.