Ed Sheeran surprises couple on their wedding day (+watch)

He's been winning hearts all over Australia during his national arena tour.

Ed Sheeran's charm offensive continued after he delivered a surprise performance during newlyweds Matt and Kya's first dance.

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The Lego House hitmaker played wedding crasher and singer at the lovebirds' nuptials in Sydney, which was pulled together by the KIIS FM team including Kyle Sandilands and Jackie O.

Taking to Instagram the 24-year-old mega star shared a touching snap with the beaming newlyweds and their children.

In the snap, the red-headed crooner places his arms around the pair, who are clearly taken aback by the VIP guests chummy demeanour.

Ed looked wedding ready in a smart white shirt, skinny tie and black trousers.

As if that wasn't enough, the Grammy Award-nominee got behind the microphone to woo the crowd with a dreamy rendition of his smash hit Thinking Out Loud as the bride and groom danced away.

Matt and Kya landed their dream wedding after Matt called into the radio show revealing plans were underway for their vows to take place a few years ago, however tragedy struck when Kya's mum died.

The couple spent their savings on a funeral and delayed tying the knot.

Teaming up with the Sydney Bridal Expo, the radio stars have truly gone above and beyond expectations by securing the one and only Ed.

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- Daily Mail