And three housemates face forfeits in the first twist of the series.
Last night saw Hollywood actress Kirstie Alley become Celebrity Big Brother's 'President' after she became the first celeb to enter the house.
Big Brother explained that Kirstie was being made the first president of the Celebrity Big Brother house. The role gives Kirstie great power and responsibilities.
Kirstie was then told that the public would be voting for a vice president to join her. Viewers could vote using the official Celebrity Big Brother app for who they want to become the vice president. They chose Coronation Street actor Ryan Thomas was named as vice president.
Big Brother announced that they had a number of tough decision to make over the coming days.
In tonight's show, the pair are given three executive orders to make.
First, they must enact a 'Climate Change Bill' by forcing one housemate to endure cold showers until further notice in order to help the environment. They chose Married At First Sight star Ben Jardine to make the sacrifice for the sake of the planet.
Next, the 'Healthcare Bill' required one housemate to set an example by living on the healthiest of diets, eating nothing but liquidised green vegetables. The president and vice president chose TOWIE's Dan Osborne to take on the challenge.
Finally, in a 'Foreign Trade Deal', one housemate had to sacrifice their suitcase and its contents to be swapped with another provided by Big Brother. Kirstie and Ryan chose 'Human Ken Doll' Rodrigo Alves to lose his clothes.
The full highlights of the first episode air tonight at 9PM on Channel 5.
Others in the house after opening night are headline grabbing footballer Jermaine Pennant, model Chloe Ayling and Gabby Allen, a Love Islander from Season 3 in 2017.
Also on the cast next were Comic, Radio and TV presenter Hardeep Singh Kohli Emmerdale actress Roxanne Pallet and TV psychic Sally Morgan.
Rounding off the line up are American reality TV personality Natalie Nunn and Rogue trader Nick Leeson.
Celebrity Big Brother 2018 continues nightly on Channel 5.