Gaga's Show: Lady Gaga Takes Over David Letterman....

Mother Monster took over the Late Show last night, with a surprise that Letterman's audience couldn't refuse--a special invitation to see her perform at the Roseland Ballroom.  Gaga entered the studio, asked the auidence if they wanted to go to the Ballroom and then walked the entire audience over to Roseland, where she is finishing up her seven night residency--which is part of the ballroom's farewell tour.

Looks like Bill Murray got to join in on the fun too, watch her performances of G.U.Y and Dope below.

--Princess Carter

Source:  CBS.com