Prince Harry is eligible and now even wealthier after he turned 25. Celebrating his birthday on September 15, the prince received a huge gift: access to part of his inheritance from his mother, Princess Diana. At the time of her death, the shares were estimated to be about $10.5 million each. When the princes turn 30, they will also gain access to the capital. Harry didn't go out and spend his inheritance on a birthday celebration — instead, he spent the day continuing his pilot training in the Royal Air Force. He once said at a 2007 memorial service that Diana was "the best mother in the world."