Taylor Swift gave two fans an unforgettable wedding on Saturday, when she made a surprise appearance at their big day to perform hit ‘Blank Space’. Taylor’s appearance at the wedding was documented by guests on social media, who shared their shock at seeing the Grammy award winner in the flesh.

A photo posted by Taylor Swift (@taylorswift) on

Max Singer and Kenya Smith wed at the Brant Beach Yacht Club in New Jersey, but the couple had no idea that Max’s sister had organised a very special surprise for them. On Instagram many guests shared pics and videos of Taylor’s shock appearance, including one which was captioned: ‘So Taylor swift showed up to my cousins wedding... #Surprised’.

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Taylor also shared a photo of herself posing with the bride and groom, which she captioned, ‘Congratulations Max and Kenya! Third wheel’. According to People magazine, the surprise was orchestrated by Max’s sister Ali, who reached out to the singer back in April.

In a letter Ali described the passing of her and Max’s mother in April and how the bride and groom had wed in the hospital so their mother wouldn't miss out on one of the biggest days of her son's life. Max had even danced with his mother to ‘Blank Space’ during the celebration.

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Swift also presented the couple with a special hand-made gift, a card with "So it's gonna be forever" in written in watercolours inside a floral circle. Earlier this week it was reported that Swift had split form her boyfriend of 15 months, Scottish DJ Calvin Harris. But the pair look to be on amicable terms as keen-eyed Swift fans spotted Harris liking Taylor’s pic from the wedding on Instagram.