Stars from Kendall Jenner to Naomi Campbell, Sofía Vergara, Tom Brady, Kate Hudson, and Martha Stewart, partied all weekend on the luxurious Luminara

So much for the Titanic era of dressing up for dining at sea, you can likely leave those tuxedos and ballgowns at home when packing for your next cruise vacation — but you might want to bring an extra pair of jeans.

Whether you get to enjoy brunch at the weekly seafood extravaganza in the Grand Dining Room or prefer a sunny chill-out day on the pool deck under the sun, Oceania Cruises’ sparkling new ship Oceania Allura is the place to be this summer.

The second-longest river on the continent, the Danube River weaves its way through central Europe like an unbroken thread of tranquil beauty. Cruise the Danube for seven nights in style, sampling the history and culture of five countries as you visit a centuries-old castle, attend a classical music concert in Vienna and finish amid the cobblestoned charms of Prague.