WHITEHORSE, CANADA - SEPTEMBER 28: (NO UK SALES FOR 28 DAYS) Catherine, Duchess of Cambridge and Prince William, Duke of Cambridge sit as stories are read to children at the McBride Museum on September 28, 2016 in Whitehorse, Canada. (Photo by Pool/Sam Hussein/WireImage)

WHITEHORSE, CANADA - SEPTEMBER 28:  (NO UK SALES FOR 28 DAYS) Catherine, Duchess of Cambridge and Prince William, Duke of Cambridge sit as stories are read to children at the McBride Museum on September 28, 2016 in Whitehorse, Canada.  (Photo by Pool/Sam Hussein/WireImage)