The feisty songstress headed to Ireland for a gig at Dublin's gay club, The George, to celebrate the 30th anniversary of Gay Pride and, given the name of the venue, it seemed only right that her soon-to-be hubby was on hand to offer a few cheers from the crowd!
Kerry - who recently appeared on ITV2's Big Reunion with her Atomic Kitten bandmates - wore an eye-catching printed outfit for her performance, which consisted of a black and white all-in-one suit and a cute jacket with contrasting orange detail.
Meanwhile, George dressed casually in jeans, a black T-shirt and brown trainers.
The couple got engaged in April when George popped the question at the top of the Blackpool Tower and they have both admitted to being head-over-heels in love with one another.
Last month, Kerry opened up about her relationship with the former rugby league player on Loose Women, explaining that they had first met at the age of 14.
In fact, George had initially asked the pop singer to marry him when they were 17, but Kerry had turned him down because she didn't feel it was the right time for them to be together.
After Kerry's performance in Dublin yesterday (27 June), George couldn't contain himself and took to Twitter immediately to gush about how well his future wife had done.
He wrote: "My baby rocked The George tonight!! So proud of her xxx "
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