Twentysomething is the third studio album by English singer Jamie Cullum. It was released on 20 October 2003 in Europe, and in May 2004 in the United States. The album has sold 2.5 million copies worldwide, and achieved eleven platinum, eleven gold and two silver certifications. It is the fastest-selling jazz album in chart history and its sales led to Cullum ending 2003 as the UK's highest-selling jazz artist in history.