Prince Haji 'Abdul 'Azim of Brunei

31-year-old Prince Haji 'Abdul 'Azim of Brunei is the eldest child of the Sultan of Brunei, Sultan Haji Hassanal Bolkiah, and Crown Prince of Dubai.

He was sent to the nine-month officer training course of the Royal Military Academy Sandhurst, but left Sandhurst after one week, according to The Daily Mail.

Prince Azim reportedly much prefers partying, and is one of the most public royals. His over-the-top parties are frequently packed with celeb guests like Lindsay Lohan and Pamela Anderson, according to The Telegraph.