Day 3 has certainly been thrilling with Jon Avila and Ethel Booba as latest additions in the house plus a bonus celebrity guest who's no less than the Uber co-host Mariel Rodriguez! And to mark this extraordinary event, Big Brother treats his residents with a brief sing-along party!

Just when everyone thought that Toni Gonzaga would also be stuck inside like her friend, Big Brother allowed her to come out again to face her waiting audience. It might have been priceless to have her with them but her pressing commitments would be on her way. But maybe she will eventually change places with Mariel. Well, we never know with Kuya.

On the activity area, a greater surprise lies in waiting for this edition's thirteenth housemate is about to face them! They had anticipated the ample food, but not Ethel Booba who arrives in style while belting a popular tune! Among them, only Mariel expected her to be there since tinseltown has been abuzz with her indecisive PBB stint for several days now. Thereafter, Ethel and Ruben take centerstage as their hosts.

The Desirable Diva begins the impromptu program by showing off her strong but sexy voice! Indeed, Riza manages to croon a performance-level-number even if it's only an acapella! Megan comes next but she ends up crooning several songs without finishing them since she doesn't completely know the lyrics. The Real Mcoy would have serenaded Ethel with a song. However, he quips that he is distracted by Ethel's beauty in person!

After a while, Kuya informs the hosts that they can now mingle with the others and enjoy the remaining minutes of their merriment. At that time, Jen insists for a sample of Ethel's signature way of speech onscreen but the latter begs off, stating that she merely wants some time to adjust herself. With that, Kuya asks them to go back inside the house where they can continue their little chats.