NOT since former MP Lembit Opik dated a Cheeky Girl have we seen the worlds of pop music and politics combine to hit the headlines.

But they did just that this week, when singer Katy Perry and former Canadian PM Justin Trudeau were spotted on a romantic ­dinner date .

The unlikely pair were pictured enjoying a low-key meal at Le Violon restaurant in Montreal on Monday, as Katy enjoyed a brief break from the ­ Canadian leg of her world tour.

Eyewitnesses reported they “sipped cocktails and shared several dishes . . . including one with lobster” before heading to the kitchen to thank the chef.

So was it a casual meeting of two unlikely friends?

Or the beginning of something much more amorous between a pair, who have both come out of high-profile relationships?

And with Justin b

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