Speculation: Kate Middleton expecting 4th royal baby

Prince William & Princess Kate attended the Six Nations Rugby Tournament in Cardiff wearing red houndstooth coats.

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Catherine Walker's coat has tailored long sleeves and a double-breasted buttoned design.

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Some fans wondered if Kate was making a message by repurposing her maternity clothing.

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Fans have taken to social media to talk about the coat and speculate about a possible pregnancy announcement.

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Kate was spotted singing the Welsh national anthem before the match, while William is a supporter of the Welsh Rugby Union.

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The couple found themselves on opposite sides as Wales hosted England for their Six Nations Rugby clash.

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They both cheered and applauded their respective teams, appearing to be strong rivals and sports lovers.

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Kate has a signature patterned outerwear in her wardrobe.

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Fans are eagerly waiting for more details and updates.

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