HAPPY BIRTHDAY Shawn Peter Raul Mendes turns br 21 years old today. Here are five facts you may not have known about the singer. 1. He was discovered br on Vine, where he br posted himself singing br covers songs. 2. The artist taught himself to play guitar when he was just 13. 3. Mendes is a huge br Harry Potter fan. 4. He was the youngest artist to debut in the top 25 on the Billboard Hot 100 chart when he was 15. 5. Ed Sheeran is his biggest musical inspiration.