Princess Kate was asked who she was during an awkward encounter in Scotland.
At one point, Kate introduced herself as William's wife when a child asked who she was at a primary school.
The comment came as Kate was happily chatting with children at Burghead Primary School.
WATCH NOW: Princess Kate being asked who she is
The princess told a group of children with Scottish flags: “I really like your school."
A young child then asked Kate: "Who are you?"
Giving a child a high-five, she gave a surprising reply: "Who am I? I'm married to William."
The princess pointed to her left while giving her reply, even though the Prince of Wales wasn't seen on screen.
Princess Kate speaking to Scottish schoolchildren
PA
Kate added: “I know! It was very nice to meet all of you."
The mother-of-three's answer showed her supportive role to Prince William, who is the current heir to the throne.
Royal biographer Penny Junor said: "She’s never trying to outshine him in any way.
"I think that Kate is a bit like Prince Philip supporting the Queen.
Princess Kate reaffirmed her status as Prince William's wife
PA
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"She doesn’t outshine William but still has a lot to say herself," she told PEOPLE.
A source added that Kate "is the sort of woman who will take on whatever she needs to.
"If she needs to step up to the plate, she does it — and she always has.
"She and William are a formidable team."