Wearing the same green Emilia Wickstead dress coat she wore to the event last year, Kate smiled broadly as she greeted soldiers from the 1st Battalion Irish Guards at Mons Barracks in Aldershot, Hampshire.
However, at one point, Kate's foot became stuck in a drain and she had to spend a few moments freeing her heel.
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Brad Treat, 38, was killed on a trail in the Halfmoon Lakes area of the Flathead National Forest, just outside Glacier National Park.
Appeal judges are to decide on Thursday whether a woman can use the frozen eggs of her dead daughter to give birth to her grandchild.
The £70 million F-35B jet arrived at RAF Fairford in Gloucestershire, two years after engine trouble postponed its first scheduled visit.