Extreme Sisters stars Christina and Jessica have revealed just how close they really are, confessing they even pooped together.

Literally.

The wild TLC programme follows the lives of sisters who are extremely close, from sharing boyfriends to actually going to the toilet together.

In a teaser clip ahead of the second series airing, twins Christina and Jessica, 37, from Washington, show how close they really are – and even reenact the scene.

They began: ‘When we were growing up, we would share the toilet and go poop together.

‘So, we would basically straddle each other – sometimes you had your arm around me like this – and it would drop.

The pair demonstrated how they used to ‘straddle’ each other on the toilet (Picture: TLC/Christophe Bayle)

Viewers weren’t too impressed (Picture: TLC/Christophe Bayle)

‘We would literally poop at the same time.’

‘Would you go number two with your number one?’ TLC captioned the clip.

And as their reactions suggest, people were pretty stunned.

Christina and Jessica reveal how close they really are (Picture: Instagram)

‘It’s okay to keep some things to yourself,’ one person penned.

Another wrote: ‘Too much information there ladies!’

‘Hell no!’ numerous others echoed.

More: Trending

The programme has been known to share some pretty wild confessions between siblings.

In the first series, sisters Brooke and Baylee revealed they have ‘shared underwear’, while twins Anna and Lucy open up about sharing their one boyfriend with each other.

Extreme Sisters returns to TLC on January 23.

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They take being close to your sister to a whole new level.