Grande announces Brandy and Monica remix of "The Boy Is Mine."
"Deepest thanks to Brandy and Monica for joining me."
Grande's video features Penn Badgley, Brandy, and Monica.
Grande stalks Penn Badgley, newly elected mayor in NYC.
Video pays tribute to Brandy and Monica's iconic hit.
Original song won Best R&B Performance at 1999 Grammys.
Latest Album "Eternal Sunshine" featuring song, follows public reaction to Grande's personal life.