<p>Singer-songwriter Madonna has become the first billionaire female pop star.<br />A successful world tour and a string of business deals last year pushed her net worth past 650 million pounds ($1 billion), reports thesun.co.uk. <br /><br /></p>.<p>The 54-year-old joins an elite club of super-rich celebrities, including director Steven Spielberg and chat show host Oprah Winfrey.<br /><br />Last year was the most successful of her career, as she raked in an extra 200 million pounds.<br /><br />Two million people watched her MDNA tour, which was the most successful of any artist in 2012. She also has a perfume range, clothing line and health drink.<br /></p>
<p>Singer-songwriter Madonna has become the first billionaire female pop star.<br />A successful world tour and a string of business deals last year pushed her net worth past 650 million pounds ($1 billion), reports thesun.co.uk. <br /><br /></p>.<p>The 54-year-old joins an elite club of super-rich celebrities, including director Steven Spielberg and chat show host Oprah Winfrey.<br /><br />Last year was the most successful of her career, as she raked in an extra 200 million pounds.<br /><br />Two million people watched her MDNA tour, which was the most successful of any artist in 2012. She also has a perfume range, clothing line and health drink.<br /></p>