The 33-year-old Atomic Kitten singer retweeted a picture of the gown: a gorgeous white lace strapless dress, with a flowing fishtail.
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George and Kerry exchanged vows at Tontworth Court Hotel in Gloucestershire, in a ceremony attended by the likes of Katie Price, Michelle Heaton, Liz McClarnon and Mel B's sister Danielle.
While there is no denying the dress is beautiful, Kerry didn't hold on to it. Instead, she donated it to Radio City's Cash for Kids appeal.
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Kerry got the dress from Bridesworld in Wallasey, and owner Betty Nelson revealed exactly what the bride-to-be was looking for.
She told Insider: "[Kerry] was looking for help, so we said 'keep it crisp, simple and sophisticated'.
"It's a classic lace fishtail dress with a touch of old Hollywood glamour. She wanted something which would should off her curves after the baby because she worked so hard training to get back into shape."
Of Kerry donating the dress to charity, Betty said: "She's a big supporter of the charity, she's very child oriented, so she asked me if I thought it would be a good idea and of course I said yes."