It's all girls together in the first heat, which sees comic Katy Brand, Sugababe Heidi Range, journalist and broadcaster Janet Street Porter and entrepreneur Jo Wood take on the cookery challenge.
Taking on six tasks over the course of two days to secure a place in the Friday night quarter finals, some of the tests they must endure are the mystery box test, the palate test, and the mass catering task.
But it's the pressure of cooking a lunch service in a busy restaurant that could make or break these ladies. Who will cook up a storm and make it through to the next round?
Celebrity Masterchef, BBC1, 8pm