The majority of famous faces use false names when checking into a hotel or travelling, and Kate Middleton, the Duchess of Cambridge, and Prince William are no different.
But by the sounds of it, they weren't as incognito as they wanted to be, because they booked the entire first-class area of the plane. Perhaps making it a little obvious that high profile guests were boarding the plane.
Back in 2009, the couple went under the pseudonym's Mr and Mrs Smith when they booked a holiday home in Cornwall for William's 27th birthday.
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