The Duke and Duchess of Cambridge, Prince George and Princess Charlotte are seen in an outdoor portrait.
Kate is holding Charlotte on her knee and Prince George is standing at her side.
They also announced that George will begin attending the West Acre Montessori School Nursery by the end of the year. George is 2-and-a-half years old.
The nursery is “looking forward to welcoming George to our nursery where he will get the same special experience as all of our children"— Kensington Palace (@KensingtonRoyal) December 18, 2015