On the Oasis-class ships, it depends on where you are sailing western itineraries tend to have the second formal night on day 5, while eastern itineraries move it to day 6 (source)
Some say it got the Russian in its name because it once contained caviar: according to a 1957 New York Times article, an early version of the dressing in Larousse Gastronomique called for mayonnaise, tinted pink with the poached coral and pulverized shell of a lobster, seasoned with black caviar and salt
Jessica Mahabir, Canada Perfect dress, great quality, I'm very happy with my purchase
It's made from a firm yet comfortable combed cotton broadcloth, with just the right amount of structure and rigidity for a formal shirt
Starting at the chest, a level edge runs across, paired with delicate straps that rise like threads above the shoulders