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

"Having the best time in Cannes. Shame I can't get my shoes off . . Thank you team! @lukejwindsor @CBHayward can't wait for the premiere tonight @blingringuk #blingring"

Emma Watson suffers some post-shoe trauma at the film festival