Nelly Furtado, Miranda Cosgrove and Leighton Meester will be presenters at September 13 show.By James Montgomery Jay-Z Photo: Jared Milgrim/FilmMagic It was already shaping up to be a pretty huge night, but now, the 2009 MTV Video Music Awards have gotten even bigger. Or at least grittier and glammier. That's because Jay-Z and Lady Gaga have been booked to perform at the VMAs, joining an already impressive list that includes Taylor Swift, Green Day, Pink and Muse. Jay — whose gnarly "D.O.A.