But the latest sighting of the 34-year-old model-turned-TV-presenter-turned-actress is not all it seems. Kelly's actually on the set of her latest film Taking Stock, in which she plays the lead female role. And if yesterday's appearance is anything to go by, Kelly has on-camera style and beauty all sewn up.
Filming a scene in central London, Kelly looked gorgeous as she strutted her stuff for the cameras in a pretty floral dress and tan wedge heels. Her hair and make-up look was natural but glossy - just as Hollywood would want it.
We sense a silver screen star in the making.
Enjoy more of Kelly's street style in our gallery.
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