Last night, fifteen celebrities enterted the Celebrity Big Brother house, and it looks like it's going to be an explosive 20th series.
We've the usual mix of soap stars, pop stars and reality TV stars, including one from Beverly Hills.
Here's the famous faces that entered the house.
Shaun Williamson - Former Eastenders star.

Sarah Harding - Girls Aloud

Sam Thompson - Made in Chelsea

Paul Danan - Hollyoaks and Love Island star

Sandi Bogle - Gogglebox

Trisha Paytas - YouTube Personality

Marissa Jade - Mob Wives

Amelia Lily - X Factor contestant 2011

Brandi Glanville - Real Housewives of Beverly Hills

Chad Johnson - The Bachelor

Derek Acorah - Most Haunted

Jemma Lucy - Ex on the Beach

Jordan Davies - Ex on the Beach

Karthnik Nagesan - The Apprentice

Helen Lederer - Absolutely Fabulous

Things got off to a flying start. Shaun was the first celebrity to enter the doors and of course, Big Brother was up to his tricks instantly.
Shaun was given a secret task and it went horribly wrong from the get go.
He had to prove that he was the most nervous housemate of all time and had to do a series of things to 'calm the first night nerves.' Cute.
It's a launch night twist for Barry AKA . This is going to be INCREDIBLE
— Big Brother UK (@bbuk)
Shaun was also given the power of giving two killer nominations. Eagle eyed viewers think Big Brother let one nomination during the live feed last night. It looks like 3 more housemates are going in!
The HMates see their Faces show up on the Wall & there's 3 Slots without any Faces & Marissa's Face is Red - She's already Nominated 😉
— ★ NY_WATCHER ★ (@NY_Watcher)
Get all the latest CBB goss on 3e at 9pm tonight!