Celebrity Big Brother 20

Celebrity Big Brother 20 is the twentieth series of the British reality television series Celebrity Big Brother, hosted by Emma Willis and narrated by Marcus Bentley. The series launched on 1 August 2017, and will conclude on 25 August 2017 after 25 days, making this the shortest series since Celebrity Big Brother 12 in 2013. The series will air on Channel 5 in the United Kingdom and 3e in Ireland. Rylan Clark-Neal will continue to present the spin-off show Celebrity Big Brother's Bit on the Side. It is the thirteenth celebrity series and twentieth series of Big Brother overall to air on Channel 5.

During the launch show on 1 August 2017, Emma confirmed that the winner would receive £50,000 for a charity of their choice. This is the first celebrity series to include a prize fund since Celebrity Big Brother 3 in 2005.

The eye was released on 19 July 2017 and features a metallic golden eye.

On 24 July 2017, a three-second teaser was released promoting the series. It includes a swimming pool with an a "#CBB" inflatable in the water. The full length trailer was released on 26 July 2017. During the live final of Big Brother 18, a further trailer was released showing glimpses of the celebrities.

On 1 August 2017, the day of the launch, the official house pictures were released. The house clearly resembles from the one previously used from the last civilian season with boxed interior designs with flat toned colors that spans even with the redecorated garden. The new house includes two bedrooms, "Forest Suite" and "Blossom Suite".

On Day 1, fifteen celebrity housemates entered the house.

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