Pinoy Big Brother: Unlimited is the fourth season of Pinoy Big Brother that will air on ABS-CBN from October 29, 2011. Toni Gonzaga and Bianca Gonzales will reprise their hosting stints for the show, together with two new hosts, PBB Teen Edition Plus ex-housemate Robi Domingo and Music Uplate Live host Martin Concio. This would the first edition of the Philippine franchise without Mariel Rodriguez, who transferred to TV5 in October 2011.
