The Olsens exhibit their fashion sense in West Hollywood. Plus: Courteney & Coco, Neil Patrick Harris, Nick Jonas and more

HOW 'CHARM'-ING!

While husband Russell Brand had to make do with mum Barbara as his Oscar date, Katy Perry makes a fresh appearance – looking dutifully accessorized! – in her new role as a brand ambassador for Thomas Sabo jewelry Saturday in Munich, Germany.