Coleen, 27, stripped off all her slap and took the photograph before posting in on Facebook to raise money for Breast Cancer Awareness.
The star is among thousands who have taken a natural picture of themselves, including Michelle Keegan who removed her make-up on the weekend, then posted it online and donated to a good cause.
Alongside her selfie, Coleen told her fans: "Here's my #nomakeupselfie #breastcancerawareness please help out and text BEAT to 70007 All for a great cause! X."
It's already shaping up to be a great week for Coleen, who has two sons - Kai and Klay - with her footballer husband Wayne.
Last night, Coleen posted a picture on Facebook of four-year-old Kai clutching certificate while wearing his pyjamas.
Coleen explained to her followers: "My little fish with his 10 metres badge and also stabilisers off his bike in the same week!! #proud."
Were you brave enough to take a no make-up selfie? Tell us below, as the best comment from across the website each week wins £50!