T'Pau hit the charts in the 80s with hits including China in Your Hand, Heart and Soul and Valentine.
Also on the cast for 2018 are recording artist and model Josh Cuthbert of Union J fame, DJ and broadcaster Clara Amfo, Singer songwriter Carol Decker, TV presenter and singer Frankie Bridge and England cricketer Monty Panesar.
Collins will be hoping for better success than her 2014 appearance in the I'm A Celebrity.
Sports star Panesar crashed out of ITV's latest Dancing On Ice line-up when he injured himself while training. They'll cook for critics and past winners in their quest to reach the ultimate challenge of cooking with top chef Bryn Williams, and finally serving up their own mouth-watering three-course menu.
As always, the celebrity contestants will be put through a plethora of culinary challenges.
Once the competition is down to four, the new Pairs Challenge will be introduced, during which they will be split into two teams of two with a wall separating the teammates, so they have to communicate to make sure each of their dishes are identical.
Panesar will compete alongside the likes of Made In Chelsea star Spencer Matthews, Strictly Come Dancing professional AJ Pritchard, The Only Way Is Essex legend Gemma Collins and former The Saturdays singer Frankie Bridge.
Celebrity MasterChef launches this summer and will take place over six weeks and twelve episodes. This series features a wonderfully diverse line up of celebrities donning the iconic aprons.
TV and radio presenter Angellica Bell was crowned the victor of the 2017 series of Celebrity MasterChef. "Along the way, viewers can expect high drama served alongside some great food".