Kate Middleton outfit: How Duchess broke royal protocol on latest outing

“I would say that’s really the only hard, steadfast rule in terms of what the Queen requires.”

If this is indeed the case, Kate could be seen to have broken royal protocol by opting to wear non-nude tights on this occasion.

In the past, Kate has also been pictured appearing not to be wearing tights – which could also be a break from the expectations of the Royal Family.

The Duchess is also frequently seen wearing large heels, which are also thought to be frowned upon by the royals.