Prince George Makes First International Trip With Kate Middleton, Prince William Stays Behind

Kate Middleton takes son Prince George on first foreign holiday

The Duchess of Cambridge and the royal tot, now six months old, are going to the Caribbean island of Mustique

Holidays: Kate has taken Prince George to Mustique

Prince George was taken on his first foreign holiday today when he and mum Kate jetted off to the paradise island of Mustique.

 The Duchess of Cambridge and her six-month-old son boarded a 747 jumbo jet for the 4,500-mile journey to the Caribbean.

William stayed in Britain but members of Kate's family have gone on the holiday.

Despite the upheaval, a source said George has been "a good boy

Kate Middleton and Prince George have spent the week vacationing in Mustique. The mother and son duo joined the Middletons on their annual family trip in honor of Carole Middleton's birthday.

While there's no word yet on how the group celebrated the special occasion, there undoubtedly was plenty of rest and relaxation.

This isn't the first time that Kate has visited there, however, it does mark baby George's first trip outside of the U.K. Aww!

But it looks like it was strictly a Middleton family gathering, as Prince William stayed home in England to focus on his studies.