Princess Cruises ushered in a bold new era of naval architecture with the debut of its next-generation Sphere-Class flagships: Sun Princess and sister ship Star Princess. Measuring 177,882 gross tons and powered by clean LNG fuel, these vessels introduce breathtaking design marvels such as The Dome (a geodesic glass terraced entertainment arena) and a dramatic three-story suspended glass Sphere Piazza. Along with these shipboard innovations came a complete re-imagining of premium accommodations: the introduction of the top-tier Signature Collection and the upgraded Reserve Collection.

Sun Princess: The 177,882-ton flagship introducing the Signature Collection enclave and Reserve Collection Cabana suites.

Sphere-Class Suite & Collection Comparison Table

Understanding the exact boundaries of suite perks, lounge access, and dining privileges between the Signature Collection and Reserve Collection ensures you select the stateroom that best matches your vacation style:

The interior salon of the Signature Sky Suite, offering unmatched square footage, modern residential décor, and panoramic sea views.

The Signature Collection: True Ship-Within-a-Ship Exclusivity

For the first time in Princess Cruises’ storied history, the Sphere Class delivers a unified luxury suite enclave: the Signature Collection. Guests booking these top-tier suites enjoy a sanctuary of quiet luxury while still retaining access to the vast entertainment of a modern mega-resort.

1. Signature Sky Suites: Palatial Living High Afloat

Perched high above the ship on Deck 16 overlooking the top decks, the two Signature Sky Suites (up to 1,262 sq. ft.) represent the pinnacle of Princess accommodations. Highlights include:

• Two private master bedrooms accommodating up to five guests with custom luxury pillow-top bedding.
• Two full bathrooms featuring marble finishes, double rain showers, and an oversized soaking bathtub.
• A colossal 700+ sq. ft. continuous wrap-around balcony offering prime views of the top-deck pool, outdoor Movies Under the Stars® screen, and 270-degree ocean vistas.
• A dedicated Suite Experience Manager catering to your every request, from in-suite cocktail parties to custom shore excursions.

Signature Suite verandas feature premium cushioned loungers and dining tables, providing the ultimate private outdoor retreat.

2. Signature Restaurant & Signature Lounge

Signature Collection guests enjoy private access to the Signature Restaurant on Deck 7, where Executive Chefs prepare exclusive gourmet tasting menus, Prime aged beef, fresh seafood, and tableside flambé desserts. Adjacent to the suites on Decks 15 and 16 is the Signature Lounge, a serene two-story glass retreat offering complimentary craft cocktails, artisanal hors d’oeuvres, and dedicated concierge assistance throughout the day.

The top-deck Sanctuary Club: Signature Collection guests enjoy exclusive access to private cabanas, dedicated plunge pools, and poolside service.

The Reserve Collection: The Innovative Cabana Mini-Suite

If you don't require full suite square footage or butler concierge service but desire elevated dining and unique stateroom architecture, the Reserve Collection is designed for you.

1. The Cabana Mini-Suite Architecture

Introduced exclusively on Sun Princess and Star Princess, the Cabana Mini-Suite (329 sq. ft.) features a patented three-stage indoor-outdoor flow:

• The Master Stateroom: Features a plush queen-to-twin bed, flat-screen entertainment TV, generous closet space, and a spa-like bathroom with glass walk-in rain shower.
• The Enclosed Cabana Lounge: Separated by sliding interior glass doors, this private cabana room includes a cozy sofa bed, reading lights, and climate control—perfect for lounging with a book or allowing children to sleep undisturbed.
• The Open-Air Veranda: Another set of sliding glass doors opens to an exterior balcony overlooking the ocean.
• Deck 9 Exclusive Cabana Deck: Guests booking Cabana Mini-Suites on Deck 9 enjoy keycard access to an exclusive outdoor deck outfitted with private hot tubs, shaded cabanas, and plush loungers.

The Cabana Mini-Suite features an enclosed private cabana lounge between the bedroom and balcony for versatile indoor-outdoor living.

2. The Reserve Collection Restaurant

Reserve Collection guests never wait in line for dinner. The private Reserve Collection Restaurant features dedicated waitstaff, expedited seating, and exclusive daily culinary creations not available on standard main dining room menus.

The private Reserve Collection Restaurant delivers seamless, no-wait anytime dining with personalized service.

Sphere-Class Architectural Innovations

Beyond the luxury staterooms, Sun Princess and Star Princess feature revolutionary entertainment and social hubs:

• The Dome: Inspired by the terraces of Santorini, this glass multi-level dome serves as a relaxing daytime pool retreat before transforming at night into an acrobatic performance stage in partnership with Cirque Éloize.
• The Sphere Piazza: A three-story glass-enclosed atrium suspended out over the water, offering 360-degree ocean views, specialty coffee shops, cocktail bars, and pop-up musical acts.
• Spellbound by Magic Castle: An exclusive speakeasy parlor delivering Victorian illusions, sleight-of-hand magic, and theatrical craft cocktails.

The Dome: A groundbreaking geodesic glass dome hosting poolside lounging by day and Cirque Éloize acrobatics by night.

Star Princess will sail scenic itineraries across Alaska, Europe, and the Caribbean with state-of-the-art LNG propulsion.

The three-story glass Piazza brings natural light and endless ocean panoramas to the social heartbeat of the ship.

Princess Plus vs. Princess Premier: Which Package Pairs Best?

To maximize your Sphere-Class voyage, pairing your stateroom with a bundled package is essential:

• Princess Plus: Includes the Plus Beverage Package (drinks up to $15), single-device MedallionNet Wi-Fi, daily crew appreciation (gratuities), two casual dining meals per voyage, and unlimited ocean-delivery room service.
• Princess Premier: The ultimate companion for Signature and Reserve suites. Includes the Premier Beverage Package (drinks up to $20 with top-shelf champagne and spirits), unlimited specialty dining (Crown Grill, Sabatini's, The Catch by Rudi, Makoto Ocean), 4-device MedallionNet Max Wi-Fi, crew appreciation, unlimited boutique fitness classes, reserved theater seating, and unlimited digital photo packages.