Last week, it was claimed Jane - who had an affair with Katie's husband Kieran Hayler - was in talks to make an explosive appearance on CBB to stir things up even more.
However, although there is no confirmation as to whether she is going in, Katie's brother Danny has warned that any glimpse of Jane on the Channel 5 show would spark major fireworks.
Danny is currently manning Katie's Twitter account and told her followers: "Certain paper thinks Jane is entering #cbb house - this won't happen, but if it did - she may well enter, but she probably wouldn't leave..."
Fans were quick to reply about the speculation, with one saying: "It'd be like years ago when they sent in Bridget Nielsen's ex mother-in-law Jackie in... All about ratings!"
Another joked: "Haha she wouldn't even make it to the middle of the stairs lol."
Meanwhile, the tensions in the house appear to have subsided after Perez Hilton staged a 'fake walkout' as part of a secret task.
Katie and her fellow contestants were told by Big Brother yesterday that Perez had decided to leave the CBB house and not return. However, what they don't realise is that the US blogger is secretly living in a room next door and is watching their every move.
Never mind about Jane, THIS is definitely going to cause an uproar!