Popsugar Celebrity The '90S Britney Spears Pictures From 1999 20 Years Later, Look Back at Britney Spears's First Year as a Pop Icon 11 January 2019 by Laura Marie Meyers View On One Page Photo 1 of 20 ADVERTISEMENT () Start Slideshow Share This Link Copy ← Use Arrow Keys → 1 January 1999 In January, 17-year-old Britney attended a party celebrating the first anniversary of Teen People. Previous Next Start Slideshow The '90sNostalgiaBritney Spears