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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The PM promises to double to 200,000 the number of homes built under an existing scheme aimed at easing Britain's housing shortage.
The Met Office has weather warnings in place for snow and ice until 10am in the north and west.
The plan, which would effectively strip banks of the benefit of recent corporation tax cuts, forms part of the party's election manifesto.