Kelsey Grammer is set to tie the knot with fiancee Kayte Walsh this afternoon in quite a creative setting: a Broadway playhouse.

According to TMZ, the actor -- who recently divorced 'Real Housewife' Camille Grammer -- will be married at New York's Longacre Theater where he just wrapped a yearlong performance in 'La Cage Aux Folles.'

Sources say the ceremony will begin at 3:30PM this afternoon and security will be extremely tight, with guards checking invitations and IDs.

A reception at the historic Plaza Hotel will follow the theatrical ceremony, where guests will dine on lobster, goat cheese truffles and braised beef shortribs -- just to name a few items on the lavish menu. And that's only for the dinner portion of the evening. A separate menu has been prepared for the after-party.