Kate and William, 33, are on holiday at Prince Charles's Scottish home, Birkhall, with their children Prince George, two, and Princess Charlotte, who was born in May.
The duchess is said to have enjoyed spending the summer with her young family, but is now keen to resume a limited programme of engagements.
These will start this week with a visit to the Anna Freud Centre in London, to highlight mental health issues in young people. She will also attend the first game of the Rugby World Cup in Twickenham on Friday.
Prince William also appears to be enjoying the shift in family dynamics, smiling broadly as he sat behind the wheel. As well as settling into life with his baby daughter, he has been getting to grips with his new role as a pilot with East Anglian Air Ambulance.
Kate's rare appearances over the summer have led some to say she has become something of a recluse. But friends insist that not being seen in public does not mean the duchess hasn't been out and about.
One said: "She's also a mother with two young children and has wanted to spend time with them."
- Daily Mail