Here's a recap of all the The Great Celebrity Bake Off 2019 contestants and results from this year.
Once again, a range of familiar faces will be entering the tent in support of Stand Up To Cancer, raising money to help fund vital cancer research.
In each episode four celebrities join Bake Off hosts Sandi Toksvig and Noel Fielding in the tent, aiming to impress judges Paul Hollywood and Prue Leith with their baking skills.
They'll face a trio of challenges at the end of which one celebrity will be named the week's Star Baker.
Great British Bake Off Celebrity contestants and results
Episode 1 - March 5
Hollywood star John Lithgow, comedian Jon Richardson, Paralympian Hannah Cockroft, and outrageous funnyman Russell Brand.
Winner: Russell Brand
Episode 2 - March 12
Quirky funnyman James Acaster, stage and screen actor Russell Tovey, TV presenter Rylan Clark-Neal and actress Michelle Keegan
Winner: Michelle Keegan
Episode 3 - March 19
Comedian Johnny Vegas, grime artist Big Narstie, Olympian Katarina Johnson-Thompson, and Labour MP Jess Phillips. Due to illness, Big Narstie was replaced by Sandi Toksvig.
Winner: Jess Phillips
Episode 4 - March 26
Broadcaster, author and journalist Jeremy Paxman; award-winning comedian Joe Wilkinson; actress Sally Lindsay; and reality star and presenter Georgia Toffolo
Winner: Joe Wilkinson
Episode 5 - April 26
Actor Greg Wise, broadcaster and journalist Krishnan Guru-Murthy, TV presenter Caroline Flack and Olympic boxer Nicola Adams.
Winner: Greg Wise
The Great British Bake Off 2019 celebrity specials for Stand Up To Cancer air Tuesdays at 8PM on Channel 4.
You can watch episodes online and catch up at All4.
Kieran Smith, Bake Off's Executive Producer added: “All of us have been affected by cancer in some way or other and Love are proud to once again partner with Stand Up To Cancer.
"We hope the prospect of 20 famous bakers sweating it out in our famous white tent proves hugely entertaining, but most importantly helps raise vital funds for a very worthwhile cause.”
Celebs who took part in last year's series included comedian Harry Hill, Spandau Ballet's Martin Kemp, actor and writer Roisin Conaty, veteran broadcaster Bill Turnbull, Countdown's Nick Hewer, singer and TV personality Stacey Solomon, The Kaiser Chiefs' Ricky Wilson and dance troupe Diversity's Perri Kiely.
Following The Great British Bake Off new Celebrity specials, the main series of Bake Off will air later in 2019.