The former `Dancing With The Stars` finalist - who has sported a slim figure since training began for last year`s show a year ago - said she couldn`t resist a few traditional English greasy goodies when she made a surprise visit to the country`s capital to surprise her fiance, Luke Worrall, recently.
She wrote in Closer magazine: "I made sure I went to my favourite place in London for a sausage sandwich, I had a proper high tea at The Dorchester, and I visited my favourite restaurant chain ever - Wagamama."
Kelly, 25, added she doesn`t care if she put on weight during the trip as she is comfortable with her figure whatever size she is.
She added: "I haven`t bothered weighing myself so I`ve no idea if I`ve put on weight, but I really don`t care.
"I`ll never be one of those girls who obsesses about their figure, that must be such a boring way to live."
Kelly recently told how she couldn`t resist surprising model Luke with her trip, because she missed him so much.
She explained: "I hadn`t seen him for six weeks because he`s been working in the UK and I`ve been working in Los Angeles.
"His agent told him to go to a hotel for a modeling job, but when he got there I opened the door - he was shocked!"