Lady Gaga Declares Why She Officially Fell Out With Perez Hilton

In today’s Tweet Beat, Metta World Peace aka Ron Artest explains his insane Twitter rampage last night (or perhaps his behavior on Twitter always), Rosie and Sia revealed a shared love for Parenthood and Lady Gaga explained why she’s no longer besties with Perez Hilton.

Image via David Livingston/Getty