The Duchess of Cambridge returned to her old prep school, St Andrew's School in Berkshire, to meet students and teachers.
The school traditionally observes St Andrews Day and Kate, who studied there from 1986 to 1995, wore a tartan coat which was in keeping with the occasion.
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Commuters were also warned to expect travel chaos as Doris gathered speeds of nearly 90mph.
A man with 62 penalty points on his licence is among thousands of motorists allowed to drive despite exceeding the limit warranting a ban.
Storm Doris is set to bring severe weather across much of the UK on Thursday as heavy rain and strong winds push in from the west.