The Sun class is a class of cruise ships originally built for and operated by Princess Cruises and currently operated by Star Cruises, Peace Boat, Cheng Zhen Cruises and Seajets (although the Seajets owned ship is not currently in active service). The vessels in the class were designed and constructed by Fincantieri Cantieri Navali Italiani in Italy. The first Sun-class vessel, Sun Princess (now Pacific World), entered service in 1995 and the last, Ocean Princess (now Queen of the Oceans) entered service in 2000. At the time of launch, the Sun class was among the largest cruise ships in the world, although this has since been surpassed.
The four ships are effectively identical, with the only notable exception being the design of the bridge wings; Pacific World and Star Voyager having exterior bridge wings. Dream and Queen of the Oceans having enclosed bridge wings.