We're nearly halfway through the latest season of Celebrity Big Brother, and already there's been some major rule breaks this series.

In the last 24 hours Chris Hughes has broken the show's rules not once, but twice. During last night's episode (14 April) it was revealed Chris had broken the 'no speaking about nominations' rule by theorising with his fellow Housemates who he thought Trisha and Patsy were going to vote for.

He was then punished for his actions by having to stand in the "Wheelie Bin of Shame" and perform a rap song.

And now, it has been revealed Chris has broken the rules again, this time with JoJo Siwa. In tonight's episode it will be shown that Chris and JoJo broke the rules by writing in code messages on each other's hands.

So along with not talking about nominations or communicating in code, what else are the Celebrity Big Brother cast not allowed to do? Well here's all the rules the cast must follow while staying in the country's most famous house.

All the Celebrity Big Brother rules housemates must follow

No contact with the outside world

I mean this one is kind of a given, but for the purposes of the show, the Housemates are not allowed to have any form of communication with the outside world.

This means they give their phones in before they enter the house and while in the house they don't have access to tablets, laptops, phones, newspapers, radio, or TVs. And if any new Housemates are welcomed into the house, the old Housemates are not allowed to ask them anything about what is going on in the outside world.

There have been instances when Big Brother themselves has broken the rules, such as when they told Angie Bowie her ex-husband David had died, leading to that now legendary Big Brother moment.

No making symbols to the outside world

The no contact rule also tries to prohibit the housemates from making any symbols or signs to anyone on the outside world during the live broadcasts.

In other reality shows, such as I'm a Celebrity...Get Me Out of Here, we've seen the campmates try and do this while they're live on TV when the Bush Tucker Trial results are read out. Last year's winner Danny Jones was spotted using a secret hand signal to communicate with his young son when the show was broadcasting live.

No sharing messages

As well as not communicating with the outside world they also have to be very selective of what they can and can't say to their fellow Housemates.

They're not allowed to communicate in secret messages or codes, which Housemates Chris Hughes and JoJo Siwa have been accused of doing this season.

No talking about nominations

Most CBB watchers will be all too aware that one of the biggest rules for the show is that Housemates are not allowed to discuss nominations with each other.

They also have to give "valid" reasons for nominating each other and they're not allowed to nominate themselves.

No napping

If we were in the Big Brother house we'd definitely be tempted to take an afternoon sleep, however the Housemates are not allowed to have naps, and an alarm will be sounded if they do this.

No discussing the previous seasons

While the housemates may love the idea of yapping about the show's previous iconic moments, they are forbidden from talking about the other series of Celebrity Big Brother and civilian Big Brother.

They're also not allowed to discuss their fees for the show, and how and when they were booked to take part in the series.

No extra items to be brought in

As well as not having access to technology they're also not allowed to bring in any other extra ways of keeping themselves entertained.

This includes no books, magazines, notebooks, pens, paper, playing cards, musical instruments etc. The only thing they can bring in is a religious text.

And when it comes to their clothing they can't bring in items that convey messages or slogans, or obvious branding.

No moving the furniture

Yes Big Brother cares a lot about their house, and unless instructed to the Housemates are not allowed to move around furniture. This also includes not tampering with the fixtures or fittings. Or, scale the walls of the House. Yep, that's a legit rule.

No unacceptable behaviour

Before Housemates enter the Big Brother House they're told the rules of the show which includes not using inappropriate language or violent behaviour.

Earlier in this series, Housemate Mickey Rourke was removed from the house following "further use of inappropriate language and instances of unacceptable behaviour."

During an early episode Rourke was given a warning over inappropriate language towards JoJo Siwa and then on Saturday (12 April) was removed from the house following his behaviour towards Chris Hughes which was regarded as "threatening and aggressive" but no physical altercation took place.

Celebrity Big Brother continues on ITV1 and ITVX