Kate Middleton wore one thing that Queen Elizabeth II hated during their reunion at Chelsea Flower Show.

On Monday, the Duke and Duchess of Cambridge were joined by Her Majesty at the unveiling of Middleton’s garden at the annual flower show event. Middleton welcomed the Queen with a kiss and a perfect curtsy upon her arrival.

Queen Elizabeth II and Middleton are rarely seen together and many are happy to see the Queen supporting the duchess at the event. However, something was off during their reunion – Middleton was wearing a wedge which the Queen popularly disapproved of.

“The Queen isn’t a fan of wedged shoes,” an insider told Vanity Fair. “She really doesn't like them and it's well known among the women in the family.”

Samantha Leal of Marie Claire described the Queen as a “notorious wedge-hater.” Meanwhile, Middleton is a fan of the said footwear and has been photographed using it in different royals engagements but not at the Queen’s presence. Thus, it was surprising that the duchess wore it at the Chelsea Flower Show when it was already known that the Queen would be attending the event.

Meanwhile, Middleton and Queen Elizabeth II’s hug and kiss became “big news.” According to royal expert Daniel Elser, it was a “breathtakingly big tick of approval” to see Middleton being allowed to greet the Queen wish such informality.

However, not everyone was ready to embrace it. Mirror reported that the Duchess of Cambridge was actually slammed by some netizens for giving the Queen a kiss in public. Others even accused her of breaking a royal protocol for doing so.

However, Zoe Forsey said that Middleton didn’t break any royal protocol because it is normal for the family to give each other a kiss on less formal events. Over the years, many members of the royal family greet the Queen in that way including Prince Harry, Prince William, Zara Tindall, and Camilla Parker Bowles.

The publication shared a series of photos showing how the other members of the royal family did the same. Unlike Middleton, those royals were not criticized for doing so.