Pippa Middleton is one very proud aunt to one of the cutest little royal tots on the planet. There's a new report that says Duchess Catherine's sister proudly showed off a photo of the future King of England on her iPhone's lock screen to a fellow traveler while she was making her way through London's Heathrow Airport recently.

According to People Magazine, the British socialite and former party planner revealed the candid picture with another person while on an escalator.

Fellow traveler Grace Stroup told the site, "She said thank you and was extremely nice, and then I did a double-take and instantly knew who it was."

Stroup added, "She pulled out her phone and her lock screen had a picture of George and Kate, smiling together looking just like a regular family - it was so cute!"

Stroup also pointed out that Middleton was traveling by herself and without any security detail to escort her through the airport. She did add that the brunette beauty "seemed in a rush to get to her game" but was "extremely lovely and polite." She also added that she was "gorgeous" in the flesh and had "a grace about her" as well.

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