The Code: Celebrity's website states that you'll need two types of evening clothes for a cruise. Most nights are "Smart Casual and Above," meaning sport shirts and slacks for men, while women will be comfortable in skirts or pants and blouses, or casual dresses. On "evening chic" nights, both men and women may prefer more dressy attire, though it is not required. Nor are jackets and ties required for men.
Number of Evening Chic nights: Cruises of four to six nights have one evening chic night, those of seven- to 11-night cruises have two, and those with 12 or more nights have three.
Nightly Casual Option: Casual dining is offered most nights on every cruise, depending upon the itinerary, and it's served in the International Marketplace, outdoor grill, the AquaSpa Cafe and Cafe al Bacio & Gelateria.
Written Restrictions and Jeans: T-shirts, swimsuits, robes, tank tops, caps and poolwear are not allowed in the main or specialty restaurants. Shorts and flip-flops are not allowed during evening hours. As long as jeans don't have holes, rips or tears, they are permitted in the main dining room any night of the cruise.