Kate and William in French Embassy - 17 November 2015

Yesterday Prince William and the Duchess of Cambridge paid tribute to the Paris attacks and signed the book of condolence in the French embassy in London.
Kate was dressed in black polka dot skirt and jacket suite previously worn for may occasions and have been owned by her before the marriage, around 2007. It was very smart outfit choice because she didn't attract much attention to her outfit which would be inappropriate on that sad occasion.

Kate arrived to sign Nelson Mandela book of condolence 2013

Order of the Garter 2008

Kate in Dublin in 2007