A royal vacation indeed! Prince William and his wife Duchess of Cambridge, Catherine, are spending some alone time with their first baby, Prince George, just before their second baby arrives.

The royal family have reportedly jetted off to the Caribbean island of Mustique for the Middleton family's annual holiday. 

According to the Daily Mirror, 33-year-old Kate and 32-year-old Prince William brought along their first bundle of joy, 18-month-old George, to the family vacation this weekend.

Just yesterday, the royal family were spotted and photographed changing planes at St. Lucia while they were heading to their destination.

Insiders say that they will be spending up to two weeks in the tropical island since the royal couple will be joining the celebration of Kate's mother Carole's 60th birthday this Jan. 31.

Apart from enjoying a family trip together before Kate's due date arrives, this is also their time to bond since Prince William will be leaving to complete  his exams prior to officially joining the  air ambulance as pilot this summer, Fashion & Style has learned.

Sources leaked that Kate's parents, Carole and Michael, were delighted for the royal family's attendance in the celebration.

Kate's siblings, 31-year-old Pippa and 27-year-old James, were also in attendance. And everyone's staying in the $20,000 per week Villa Aurora, which has state-of-the-art amenities, including a private swimming pool and sun deck.

This is also a good time for Catherine, Duchess of Cambridge, to take some time off from her busy schedule. In the recent weeks, she was preoccupied with public engagements amid her pregnancy to royal baby no. 2.