Another star visits PBB house tonight

PBB will air live tonight because a star will be visiting the housemates later. The impression I got was that Vilma Santos would be visiting. That sounds like a reasonable guess since Vilma Santos watches PBB and raves about the show specially the values one can get from watching. Another possibility could be Sharon Cuneta. A clue they gave is that the star that will be visitng is big star. Sharon is a big star both in stature and weight. =) Apart from those two I don’t seem to get other vibrations on who this visitor will be. can you guess who will it be?