The Channel 5 show, hosted by Emma Willis, will use 45 cameras to keep an eye on the latest batch of housemates which includes former N-Dubz star Dappy, US boxer Evander Holyfield and Apprentice reject Luisa Zissman.
Other reality TV veterans include Sam Faiers from The Only Way Is Essex and Made In Chelsea's Ollie Locke.
They are joined by journalist Liz Jones, singers Lee Ryan and Linda Nolan and 82-year-old entertainer Lionel Blair.
Also in the house are comic Jim Davidson, glamour model Casey Batchelor and US actress Jasmine Waltz.
Show bosses have promised the contestants "a sumptuous and ostentatious palace" that is "swathed in luxury" but warned them that anyone caught breaking the rules could be banished to the garden prison.
The show has been a huge hit for the channel since it took it over after it was dropped by Channel 4 and has contributed to its success which has led to reports that media mogul Richard Desmond is considering putting the broadcaster up for sale with a price tag of more than £700 million.