Just ask Susan Sarandon.

The pair were seen exchanging pleasant smiles while Prince Philip looked on.

Sarandon has been to the UK before, but this was her first known encounter with the royal family.

Susan Sarandon at the Royal Windsor match

Do not bow' and I thought, ‘well, I’m going to be respectful.'"

But then the queen’s attendants reportedly told Sarandon, “Don’t ask her any questions.

[If] she talks to you, it’s okay but don’t ask her anything.

Queen Elizabeth II and Prince Philip

That is until she later saw the headlines about breaking royal protocol.

Sarandon admitted, “I still don’t know what I did wrong.”

In the end, the media scrutinized everything from Sarandon initiating a handshake to her failing to bow.

A jockey bows to the Queen