Rihanna is suffering from the flu

Rihanna has had to pull out of a scheduled tour date after she was admitted to hospital.

The singer should have performed in Malmö, Sweden, last night as part of her Loud Tour, but she's been struck down with a bad case of the flu.

'Sorry Malmo!!! #LOUDtour,' she Tweeted last night alongside a photo of herself hooked up to a drip.

Rihanna, 23, has been on tour since June and is due to play in Stockholm this evening.

'I am sorry to everyone who was coming out to my show in Malmö,' she says in a statement. 'I was so excited to perform for you all.

'It would have been a great time...so much better than being sick with the flu, ugh!

'I'm really disappointed I couldn't be there.'

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Esme Riley