Earlier today, the 24-year-old reality star shared a candid selfie with her 740,000 Twitter followers, which showed her completely make-up free.
Millie was on her way to get her warpaint professionally applied, so decided to reveal beforehand what she looks like au naturel and carefree.
Uploading the picture to the social networking site, Millie commented: "Bare faced on my way to get my make up done by my idol @CTilburyMakeup #dreamday."
It seems Millie is secretly planning something special with make-up artist Charlotte Tillbury and it is only a matter of time before we find out exactly what it is.
The star also retweeted a Twitter post from Charlotte, who told her followers: "I can't wait to reveal a very special project with the gorgeous @millsmackintosh watch this space..."
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