P330 4-Tel 330 Wed 22 Dec C4 03:14:13          10.35-11.10 Tuesday 21 December Planet Pop goes full on festive this week for its Christmas Special. Marc quizzes 1999's Queen of Pop, Britney Spears, about hit fantastic year. June gatecrashes a live radio session with the Westlife boys to talk about their whirlwind year. The S Club 7 gang are in the house to perform Friday Nights, from their Back to the Fifties special, and Australian sensations Supjrgirly treat us to some very special renditions of favourite pop classics. Main index C4 Today Tomorrow Previews