Relive some of the biggest hits of 1999 with these Top of the Pops classic performances. As a new millennium approached, the Vengaboys were back in town, as were legendary singers Blondie and Whitney Houston with their stunning new styles. It's the year pop stars were born as Britney Spears, Jennifer Lopez and Christina Aguilera all performed for the first time on Top of the Pops.Boy band Westlife were bossing the charts, and Ricky Martin's smooth hips had us living the crazy life. Plus, with a little bit of Lou Bega and many more, 1999's biggest hits will have you partying your way to the end of the century.