The four-part series will air early this year and will see 16 celebs competing in an hour-long special episodes.
Of course, Bake Off wouldn't be Bake Off without judges Mary Berry and Paul Hollywood, who will be back to judge the celebrity bakers in their bid to become Sport Relief Star Baker.
Jennifer Saunders, Sarah Millican, Ed Byrne and resident Bake Off presenter Mel Giedroyc will present one episode each.
In true Bake Off style, the contestants will create signature, technical and showstopper challenges in every show, but it will be singers, footballers and comedians among the famous faces crouching by their ovens...
We can't wait!
On your marks, get set... BAKE!
Episode fourWe can't believe The Great British Bake Off Sport Relief is coming to an end - we don't want it to! The final episode will be aired Wednesday 24th February 2016 at 8pm on BBC One.
Find out how to get involved in Sport Relief here
This week sees actor Alison Steadman, comedian Ade Edmondson, singer Will Young and actor and comedian Morgana Robinson battle it out for the title of Star Baker.
For the signature challenge the bakers will be making open-top pies (mmm… pie!) followed swiftly by the technical challenge of salmon roulade. For the showstopper round they must impress Mary and Paul with their cupcake baking and stacking techniques.
Try one of our amazing cupcake recipes
Episode threeThe next round of The Great British Bake Off Sport Relief is on our screens Wednesday 17th February 2016.
The celeb line up for this episode includes ex-Spice Girl Geri Horner, BBC world affairs editor John Simpson, footballer and pundit Jermaine Jenas, and 1990s pop sensation Louise Redknapp. Comedian Ed Byrne will be hosting this round too!
So, what's on the menu? For the signature challenge savoury tarts are on the list - they shouldn't be too hard, right?! The technical sees celebs get chocolaty with Mary Berry's classic chocolate and beetroot tray bake mmm...
The showstopper the celebs attempt to make 3D models of their favourite sporting moments out of biscuits - eek! Who will crumble under the pressure? Who will snap when it comes to the final hurdle? There's only one way to find out...
In the meantime - fancy a spot of baking? Have a look at some of our favourite Bake Off recipes including treats from Mary Berry, Paul Hollywood and past contestants such as Frances Quinn and Jo Wheatley.
Episode twoAired on Wednesday 3rd February 2016 at 8pm, BBC One the second round of the Sport Relief Bake Off sees ex-Labour politician Ed Balls, writer and presenter Victoria Coren Mitchell, sports commentator Chris Kamara and singer and actress Kimberley Walsh. This show is hosted by the one and only Jennifer Saunders (we can't wait for the innuendos!)
So, wondering what they're going to be making in the next round? Well, it's onto muffins and pies for these celebs - how exciting! The signature challenge sees them make 24 identical American-style muffins, the technical - football pies (don't ask!) and the final, the showstopper round is another epic, tiered-cakes representing an extreme sport.
Good luck to all the bakers!
Find out what they're making in episode three shortly - eek!
Episode oneYes! The Bake Off is back on our screens on Wednesday 27th January 2016 at 8.30pm, BBC One. This all-celeb show sees comedian Jason Manford, EastEnders actress Maddy Hill, ex-England goalkeeper David James, and business woman and wife of the Prime Minister Samantha Cameron bake for Sport Relief in the Bake Off tent.
For the signature challenge, they must make 24 canapes using rough puff pastry made from scratch - tough one ey? They then have to create Paris Brest, a French pastry confection, in the technical challenge (we have no idea either!) followed by the famous showstopper round which sees the celebs bake a 3D cake in the shape of a sporting trophy.
Let the Bake Off battle commence!
Meet the Great Sport Relief Bake Off celebrity contestants
Ade Edmondson, comedian
Alison Steadman, actor (we LOVED her in Gavin & Stacey)
Chris Kamara, footballer and Sky Sports presenter
David James, former England goalkeeper
Ed Balls, former shadow chancellor
Geri Horner (formerly Halliwell), ex-Spice Girl
Jason Manford, comedian
Jermaine Jenas, footballer
John Simpson, BBC broadcaster
Kimberley Walsh, singer and TV presenter
Louise Redknapp, singer
Maddy Hill, EastEnders actress
Morgana Robinson, comedian
Samantha Cameron, businesswoman and prime minister's wife
Victoria Coren-Mitchell, writer
Will Young, singer
The series will also follow presenter Claire Balding as she visits a number of Comic Relief projects in Kenya, and Olympic gold medallist Denise Lewis visiting a UK project, to show how the Sport Relief money raised will make a difference.
Sport Relief encourages everyone to get active to raise cash and change lives. Since 2002, Sport Relief has raised more than £262 million for Comic Relief, to help people living in the poorest communities around the world and in the UK.
Sport Relief 2016 will take place from Friday 18th March to Sunday 20th March 2016.