KATY Perry appeared to fight back tears live on stage as she sang an emotional song three months after her split from husband Orlando Bloom.

The pop superstar, 40, kicked off the UK leg of her Lifetimes tour in Belfast at the weekend and, during the fourth chapter of the set, it all looked to be a bit overwhelming.

The chapter, titled Choose Your Own Adventure, began with the 2013 track Ghost.

While not written about Orlando, 48, the lyrics about a tough break-up, that sees a lover and best friend fade away to be come little more than a memory, were very apt.

Katy moved along the walkway into the crowd and crouched as she sang, "My vision's twenty-twenty, I see through you, now, now, now, now, so rest in peace, I'll see you on the other side."

As the chorus rang out, Katy did her b

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