Pens at the ready, you'll want to take note of all of these stylish gems.
What's she launching? Her signature fragrance, Purr by Katy Perry. The pop princess promoted the perfume in Toronto in June 2011, seven months after its official US unveiling. (Better late than never, eh Canada?)
What's she wearing? A lavender-coloured silk-knit frock and matching cardigan by Dior, teamed with Miu Miu peep-toe pumps. All very chic - but what really set the outfit apart from the norm was the pair of super-cute kitten ears by Parisian milliner Maison Michel. The perfume's called Purr, remember? See what she did there?
What the press said: 'Look out, Duchess - there's another Kate, er, Katy making her mark up north,' wrote the style-watchers at People magazine, during a brief respite from charting the Duchess of Cambridge's outfits during her tour of Canada.
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