NOT SEEN ON TV: Toni in shock over Alex’s ‘PBB’ entry

Here’s what “Pinoy Big Brother” viewers didn’t see after the cameras stopped rolling: Toni Gonzaga was just as shocked as sister Alex, who entered the famous yellow house only an hour into her debut as co-host of the reality show.

During the live kick-off of “Pinoy Big Brother: All In” last Sunday, the co-hosts, which also include John Prats, Bianca Gonzalez, and Robi Domingo, took turns in introducing the new set of housemates of the reality show.

For the first time since “Pinoy Big Brother” debuted in 2005, it brought together for this season housemates of different age groups (adults and teens), along with local celebrities.

For the last housemate to be introduced last Sunday, Toni and Alex were made to stand at the same spot where the previous housemates posed before facing the audience — a hint of things to come.

Months leading up to the grand re-opening of “Pinoy Big Brother,” Alex was already announced as one of its co-hosts and even made promotional appearances on ABS-CBN programs.

As “Kuya” noted in his first conversation of Alex in the confession room shown Sunday, she is the only co-host of this season who has yet to experience being a housemate.

Toni was a houseguest in the second celebrity edition in 2007. Gonzalez and Prats were both housemates in the first celebrity edition held the previous year, while Domingo was a teen housemate in 2008.

“Pinoy Big Brother: All In” airs weeknights on Primetime Bida on Saturdays and Sundays as part of ABS-CBN’s Yes! Weekend line-up. Afternoon updates are also aired via “Uber” on weekdays.