Kate, 33, was pictured arriving in Portsmouth for a public engagement on Thursday morning (12 February), shortly arriving home to the UK from her family vacation.
The royal looked beautiful in a chic Max Mara white coat while attending the Ben Ainslie Racing and the 1851 Trust project.
Kate was visiting Portsmouth to have a look at the progress being made at the Ben Ainslie Racing facilities, and she is a patron of the 1851 Trust, which aims to inspire a new generation through sailing and the marine industry. The project works with people under 25 from diverse backgrounds.
The royal arrived home in the UK this week from Caribbean, where she'd been holidaying with husband Prince William and their baby son George. Other members of the Middleton family were also there as the trip was to mark Kate's mum Carole's 60th birthday.
Kate is known to like Mustique because of its privacy. The tiny private island was also the venue of Cheryl Fernandez-Versini's wedding to Frenchman Jean-Bernard last year.
While today's visit to Portsmouth was Kate's first public engagement since her holiday, she did take on a private engagement earlier this week.
On Tuesday, she paid a quiet visit to a children's hospital in Beckhenham, Kent, that wasn't publicised by the palace ahead of time.
According to reports, she spent more than hour talking with young patients and staff, and even allowed one youngster to teach her some ukulele chords.
Kate and Prince William are expecting their second child in April.
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