Peter Andre's new girlfriend Emily Macdonagh is 17 years his junior

Peter Andre treated his new girlfriend Emily Macdonagh to an evening out in London yesterday.

The singer, 39, took 22-year-old Emily to see Ghost The Musical at the Piccadilly Theatre.

The couple were joined by Peter's eldest brother Andrew, 54, who's currently battling cancer.

Peter met medical student Emily when her dad Ruaraidh - known as Dr Ru - treated him for kidney stones after he fell ill before a gig in Somerset two years ago.

They were first spotted together last week when they went for a romantic dinner at a Thai restaurant in Mayfair. 

'Dr Ru's a friend of the family and I've known Emily, who's studying to be a surgeon herself, for about a year,' says Peter.

'She's a beautiful girl and we've been on a few days but we're continuing to get to know each other.'

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Anna Duff