The 31-year-old model-and-actress - who called time on her 20-month relationship with rugby player Danny Cipriani last June - enjoys getting all her friends together for a trip to the holiday destination on the French Riviera.
She said: "At the moment my favourite place to go on holiday is St. Tropez. I`ve just got back from there and had such a good time. I try to go every year and was there recently with a group of friends - we were hanging out, partying on a yacht. The shopping there is amazing too."
Kelly is currently single and she insists any man hoping to take Danny`s place has a lot to live up to because her dream guy is Marlon Brando.
Speaking about the late Hollywood legend, she said: "Marlon is just beautiful to watch on screen. He`s incredibly sexy and manly but there`s a real vulnerability about him too. I love him in `On the Waterfront`.