A cruise liner has set sail on an 11-day tour of the beautiful Caribbean with 2,300 passengers on board.

So, why are we talking about it? Well, everyone is travelling for the entire 11 days, completely nude.

The Big Nude Boat trip could be the easiest holiday to pack for. A nudist travel company, Bare Necessities, is running the trip.

About 2,300 passengers boarded Norwegian Cruise Line’s Norwegian Pearl.

Bare Necessities said it aims to “break down the barriers against social nudity and make clothing-optional vacationing a viable and acceptable option.”

Travellers will be able to participate in an array of activities, including a passenger talent show, LED parties or a bit of bowling or rock climbing.

However, there are rules for where guests are allowed to be nude.

Passengers can be nude in public areas, including the buffet and anywhere on deck when the ship is at sea or anchored in port unless specified otherwise.

Passengers must be clothed when the ship is docked in port, including balconies, until the ship leaves and an announcement is made that nudity is allowed.