The "X" in the Celebrity Cruises logo stands for the Greek letter Chi (Χ), which is the first letter in the name Chandris, the original founding company of Celebrity Cruises. When Celebrity Cruises was established in 1988 by the Chandris Group, they used the "X" as a nod to their Greek heritage. Even after Celebrity became part of Royal Caribbean Group, the iconic "X" remained as a distinctive and elegant symbol of the brand.