Happy Birthday pop star Austin Mahone! His hottest ever moments

Justin Bieber rival Austin Mahone turns 21 today (April 4). The singer, who's had hits with the likes of Pitbull and Becky G, has a huge following on social media with over 10 million fans and counting. He's set to return this year with his first full length record, and we can see him going onto big things. Checking him out below: More stories: ‘Cucumber’ creator Russell T Davies reveals why he thinks the show lost so many viewers Kylie Minogue refused to cut gay kisses from ‘All the Lovers’ music video, director reveals