We just returned from the New Museum, where fans of Lady Gaga camped out through the night for a chance to attend a book event featuring the ubiquitous pop star and celebrity photographer Terry Richardson next Tuesday. The line began forming yesterday afternoon and now snakes around Stanton Street all the way to Chrystie. Bleary-eyed Gaga devotees seem to be in good spirits. But they’ve got awhile to wait. Nu-Mu’s doors don’t open until 10 a.m. In order to attend next week’s event, you’ve got to buy “Lady Gaga X Terry Richardson,” the $50 coffee table book.. We first brought you news of the upcoming Gaga-frenzy Friday afternoon.