From the experts:
Cece, all by itself, gained notice as the nickname of Jim and Pam's baby on television's The Office. On the show as in real life, Cece is often short for Cecelia or even Cecilia, but it can also be a short form of just about any C name. Cece -- or, less elegantly, CeCe -- can also be a stylish nickname name used all by itself, ala Coco and Lulu. If you really love girl names starting with C, this is one way to express your devotion every time you say your daughter's name!