Duchess of Cambridge on red alert!

Prince William and Kate, Duchess of Cambridge leave after the Order of The Garter Service at Windsor Castle in Windsor, England. (Getty Images)

The Duchess of Cambridge dazzled in red today as she joined the Royal family for yet another day of public engagements with an appearance at the annual Garter Day service. (Getty Images)

She wore the same red coat to Calgary Zoo during a tour of Canada back in 2011. (Getty Images)

Kate the Duchess of Cambridge talks with Lord Ashburton as they wait for cars to pick them up to leave after the Order of The Garter Service at Windsor Castle in Windsor, England. (Getty Images)

Kate the Duchess of Cambridge arrives for the Order of The Garter Service at Windsor Castle in Windsor. (Getty Images)

Camilla the Duchess of Cornwall, right, and Kate the Duchess of Cambridge, curtsy as Britain's Queen Elizabeth II is driven past them after the Order of The Garter Service at Windsor Castle in Windsor, England. (Getty Images)

(Getty Images)

(Getty Images)

(AP)

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