'Boyfriend duties call,' Trudeau says after skipping Canada match to watch Perry
She had teased deciding against performing one of the hits in her rather lengthy catalogue of chart-toppers – from California Girls and Teenage Dream to
She had teased deciding against performing one of the hits in her rather lengthy catalogue of chart-toppers – from California Girls and Teenage Dream to Firework and ET - before the performance, telling People Magazine that she chose the relatively unknown ballad because "it's very fitting for the ceremonial song that I get to sing".
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