HELLO! Online's pictures of the week: the best Instagram and Twitter photos from Rihanna, Cara Delevingne and more

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HELLO! Online's pictures of the week: the best Instagram and Twitter photos from Rihanna, Cara Delevingne and more

"Cara Delevingne wearing #Burberry on the #Cannes red carpet for #TheGreatGatsby last night"

Burberry's flagship model Cara Delevingne knows how to steal a show