We Need to Discuss How Adorable Shawn Mendes Is During His Latest Performance

If you're not listening to Shawn Mendes every day, you need to think about a lifestyle change. The young star has been lighting up the charts with "Stitches," and he performed the hit at the Billboard Music Awards on Sunday. It's no wonder people are freaking out over his recent song, "I Know What You Did Last Summer." Plus, you have to give him props for daring to follow Britney Spears's medley of her greatest hits. Enjoy, and check him out on the red carpet!