The final contract of the first two Sphere-class vessels was signed in March 2019.

[7] Sun Princess was seen completing her sea trials in November 2023 and January 2024.

[10] The Ted Lasso actress would later participate in an ad campaign where she performs the theme to The Love Boat television series aboard the ship.

The Sphere class has been a major update to the overall design of Princess's ships, featuring a more modern look.

Sun Princess also features new glass, dome-like elements visible from the exterior of the vessel.