Pinoy Big Brother: Unlimited is the fourth main season of the Philippine ABS-CBN reality television series Pinoy Big Brother and the ninth season overall that aired from October 29, 2011. Toni Gonzaga and Bianca Gonzalez reprised their hosting stints for the show, together with PBB Teen Edition Plus ex-housemate Robi Domingo. The season ended on March 31, 2012 after 155 days, breaking Double Up's record for the longest duration by three more weeks and also ranked as one of the show's longest seasons worldwide, only surpassed by a number of seasons held in Germany. It is the first regular season with a male winner: Slater Young.