Four Celebrity Cruises’ ships will take passengers to a Caribbean concert by US singer Demi Lovato.

The event is scheduled for December 28 on St Maarten in the first of a concert series to be run by the cruise line.

The gig is being featured as part of the itineraries of four ships in the fleet – Celebrity Equinox, Celebrity Eclipse, Celebrity Reflection and Celebrity Summit.

The ships are sailing from Fort Lauderdale, Miami and San Juan on Christmas cruises.

Access to the concert at an unnamed “special venue” is restricted to passengers on the four Caribbean cruises with prices starting at $100 and rising to $300 for VIP tickets.

Celebrity Cruises’ chief executive, Lisa Lutoff-Perlo, said: “We always want to offer our guests unforgettable experiences so we’re ecstatic to provide families with the chance to see Demi Lovato perform in concert this festive season.

“We’re also offering a special meet-and-greet with Demi, a truly unique and unforgettable experience that only Celebrity Cruises can provide.

“We can’t think of a better way for families to celebrate Christmas and prepare for the New Year than enjoying a one-of-a-kind concert in St Maarten combined with a modern luxury cruise. This is what makes us so distinct.”