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Two of Australia’s hottest celebrities – singer Jessica Mauboy and Home and Away’s Kate Richie will officially name P&O’s two newest ships, the Pacific Aria and Pacific Eden, via their personal Twitter accounts on November 25.

The historic date is the launch of P&O’s 5 Ship Spectacular where the Pacific Aria, Eden, Jewel, Dawn and Pacific will sail together into Sydney Harbour.

P&O revealed that the two home-grown Aussie celebrities are the godmothers to its new ships. Jessica and Kate will officially christen the ships in a dual ceremony on Fort Denison.

Jessica and Kate will also post the name of the ships on their Facebook and Instagram accounts

“Both Jess and Kate are well known and well-loved around the country. They epitomise modern Australia and really embody the new look and feel of P&O Cruises so we are delighted they will be naming these very special ships – and in such a modern way,” said Ann Sherry, CEO for Carnival Australia.

“It will be a history-making day – we will have five ships on Sydney Harbour, a dual christening and we’ll be officially naming the ships via Twitter, which we believe is a world first.”

The 5 Ship Spectacular party will begin with the cruise line’s five-ship fleet creating a V formation off the Heads of Sydney Harbour early in the morning, as they meet for the first time.

The ships will then enter the Harbour single file, with Pacific Aria and Pacific Eden following their three big sisters. As they reach the centre of the Harbour around 8.30am, Pacific Aria and Pacific Eden will sail either side of Fort Denison, where their godmothers will name them and Champagne bottles will be smashed on their bows.

The five ships will then berth in the Harbour, with 25 artists performing live concerts onboard for guests in the afternoon – including Jessica Mauboy on Pacific Aria. The ships will sail from Sydney in the evening following a spectacular fireworks display for Sydneysiders at 8.45pm.