Hello!: Prince William and Duchess Kate may plan first vacation as family of five

The Duke and Duchess of Cambridge are reportedly taking some time out for a family vacation.

After a busy few months, including a new bundle of joy, a royal wedding, a christening, and endless public appearances, William and Kate are reportedly vacationing in Mustique, as reported by Hello!.

The couple and their children, Prince George, Princess Charlotte, and Prince Louis, were spotted arriving in St. Lucia before boarding a private flight to the Caribbean island of Mustique, according to royal blogger Tea Time with the Cambridges.

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The vacation would be their first as a complete family of five and Louis' first trip ever.

Hello! also reported that Kate's parents Carole and Michael came along for the trip, but not Pippa, her younger sister, who is pregnant with her first child.

Mustique, a private island in Saint Vincent and the Grenadines, about a hundred miles west of Barbados, would be perfect for the royal family because it operates a no-fly zone over the area.

The island is also a pretty exclusive choice of location as just 100 luxury villas are available to reserve, making it a perfect place for them to relax away from the public eye and paparazzi.

This isn't the first time William and Kate have spent time in Mustique. They vacationed there in 2012 and in 2014 when George was very young.

According to Hello!, Kate's parents go to the island almost every winter to relax. The last time the Duke and Duchess joined the Middletons in the Caribbean was in 2015.

William and Kate, who got engaged in Kenya, were married at Westminster Abbey in April 2011.

Kate had been one of William's university flatmates. They began dating in 2003. Prior to their engagement, their relationship had become a subject of tabloid speculation.

Their newest child, Louis, is Queen Elizabeth II's sixth great-grandchild and is now fifth in line to the British throne.