She wasn't on the guest list. But singer Samantha Mumba did get into the President's party - by posing as a Zambian nun called "Sr Lucy".
The elaborate disguise was aimed at fooling other guests who were interviewed at yesterday's function by Mumba for a "reality TV" series due to be broadcast next year.
It was not clear last night whether the President was aware of the hoax. A spokesperson for Mrs McAleese was unavailable for comment.
