Miriam - star of controversial transgendered reality show There's Something About Miriam - is entering the Big Brother Australia house this weekend.

The Mexican model will join the house on Sunday as part of a promotional tour for the Sky One show, which airs its final episode on the ten network Tuesday.

Interestingly, the ten remaining BB housemates will be clueless to Miriam's secret: they entered the house before the series began.

Tim Clucas, Network Ten’s head of development, said: “Sending Miriam into the House plays to the time honoured tradition of Big Brother, messing with the minds of the housemates. It will be fascinating to see who falls for Miriam’s charms and who thinks she’s too good to be true."