The Atomic Kitten star married her childhood friend in a romantic ceremony in Gloucestershire on Sunday, 14 September, surrounded by family and celebrity friends.
And tweeting this week, she told fans she's thrilled to now be Kerry Kay.
"Loving my new name," she said. "Mrs Kerry Kay!"
Doting hubby George was quick to respond: "Haha, love the fact we have the same name."
Kerry and George actually met as teenagers in Warrington but romance didn't blossom until many years later. They became engaged in Blackpool last year, after George enlisted the help of her kids in getting him to pop the question.
Since then, the couple have gone on to welcome their first child together, daughter Dylan-Jorge, who was born in April 2014. Kerry is also mum to kids Molly, 13, Lilly-Sue,11, Heidi, seven, and Max, six, from previous relationships.
Shortly after tying the knot, singer Kerry told fans she was the "happiest girl alive", adding: "Love waking up with my husband. Really want to rewind and do it all again. Really was the best day EVER."
Kerry was previously wed to taxi driver Mark Croft and Westlife star Brian McFadden.
More stars who married in 2014:
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