The larger-than-life pop star will sing at Tuesday's ball for White House staffers, a person familiar with the inauguration let slip today.
The staff ball is typically a private affair and last time around Obama's people were treated to a special performance from the President's good pal Jay-Z.
Performance: Larger-than-life popstar Lady Gaga,
pictured, will sing at Tuesday's ball for White House staffers
Reprising her role: Beyonce will appear at the
second inaug
