Lady Gaga and Perez Hilton Twitter Feud

There was a time when Lady Gaga and internet pop-blogger, Perez Hilton were thick as thieves, touring the world together, but that isn't the case now, as the two have been airing their dirty laundry all over twitter. This most recent flare up began when Perez mentioned Gaga's new single 'Applause' isn't getting the attention of her competitor, Katy Perry's newest 'Roar'. Since then, the Mother Monster has accused Hilton of stalking her, claiming he's trying to get an apartment in her building