Reports from gossip websites such as TMZ and tabloids like New York's Daily News painted a picture of an extraordinarily lavish occasion likely to cost three to five million dollars.

Given the secrecy, however, that could not be immediately confirmed.

Among the few guests to talk ahead of the wedding were Danson and his wife Mary Steenburgen.

Steenburgen, a longtime Clinton friend from the president's home state of Arkansas, said Chelsea's parents were experiencing "pure joy" for their daughter.