Kate Middleton and Prince William may not need to change outfits on the plane from Canada to California - but we are guessing Kate probably will.

The Duke and Duchess of Cambridge honored the colors of the Canadian and American flag as they bid farewell to their future subjects.

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Kate and William wave goodbye
Prince William & Kate wrap up Canadian royal tour Reuters
Police
Britain's Prince William and his wife Catherine, Duchess of Cambridge, pose with police officers at the airport in Calgary Reuters
Kate middleton Kate middleton California Canada