Russell Brand and Katy Perry got together in September
Katy Perry and fiancé Russell Brand have added to their family - they've bought a cat together.

The singer informed her fans of her happy news on Twitter.

Russell and I would like to announce the birth of our third child, Krusty,' she wrote.

Katy, 25, also uploaded a photo of the kitten on the micro-blogging site.

She already owns Kitty Purry while Russell, 34, has his own moggy called Morrissey.

They got engaged in India on New Year's Eve.

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