The 17-year-old singer topped People magazine`s annual list after earning a reported $53 million in the last year, beating the likes of Miley Cyrus - who shot to fame playing the title character in Disney TV show `Hannah Montana` - and his girlfriend Selena Gomez. Justin`s earnings are thought to have increased after the success of his 3-D concert movie, `Never Say Never`, and from sales of his new perfume Someday. Miley, 18, took home a cool $48 million, while 19-year-old Selena banked just $5.5 million in comparison. Will Smith`s children Jaden and Willow made $9 million combined, while Jonas Brothers star Nick Jonas racked in an impressive $12.5 million. And it seems Justin has been keen to spend some of his hard-earned cash as he recently splashed out $25,000 on a necklace. The `Baby` hitmaker also had a hand in designing his new piece of jewellery which is based on animated `Family Guy` talking baby Stewie Griffin - voiced by Seth McFarlane - and features 12 carats of rubies and diamonds. Beverley Hills jeweller Jason Arasheben helped Justin create the necklace, revealing the `One Time` performer "had a specific vision for how he wanted it to look".