The entertainment world is one such space where you don't have to wait till your hair turns grey to be sitting atop millions. With some smart moves, strategies and a bit of a talent, you can be a rich young lad, earning much more than your peers. So, here's a list of few such celebrities who have amassed millions, and they aren't even 30! The world's youngest billionaire, Kylie Jenner earns her bucks from a lot of sources. She has been appearing on Keeping Up with the Kardashians since 2007, one of the most successful shows on TV. The 22-year-old also owns Kylie Cosmetics, valued at $900mn, as of March'19. Her mobile app, which is the number one on iTunes App Store, is another of her income channel. Next in the list is Taylor Swift, who started really young. At 15, she was the youngest songwriter to sign with Sony, and today she's one of the best-selling music artists, having sold over 50 million albums. One of the world's highest-paid celebrities, the 29-year-old also earned millions through her six-month Reputation Stadium Tour last year. She is also the face of 20+ brands. The 25-year-old apparently brings in $80mn annually, and his music isn't his only income source. Yes, we are talking about Justin Bieber. He earned $53.3mn, $69.9mn, and $250mn, from his three world tours. His first documentary, Justin Bieber: Never Say Never, grossed over $73mn. Taking advantage of his teenage heartthrob image, the singer-songwriter-actor also earned a lot through his first fragrance, Someday. How can this list not include Miley Cyrus, who earned $15,000\/episode from Hannah Montana? The 26-year-old also earned loads from the Hannah Montana merch. Apart from that, her music, film roles and concerts showered her with truckloads of money. Her first tour raked in $60mn, and she has several others lined up. She also earns hefty checks from her clothing line, and several endorsements. One of UK's richest musicians, Ed Sheeran has only two income sources: His music and tours, and that's enough! His 260 show Divide Tour earned him roughly $775.5mn, becoming the highest-grossing tour of all time. His Divide album continues to bring him moolah, even though he hasn't released an album in the past two years. His collaboration with Heinz also contributed to his income. He is just 11, yet Iain Armitage has a $4mn net worth. Armitage, who plays Sheldon Cooper in Young Sheldon, earned $660,000 from Season 1, $686,000 in the next, and is expected to get $715,000 in total for Season 3. His bank balance also swelled up for playing Ziggy Chapman in Big Little Lies, which also stars Reese Witherspoon, Nicole Kidman and Shailene Woodley.