From Rita Ora to Miley Cyrus, sometimes the slap doesn't do celebs any favours and as the educational service that we are, we thought we'd highlight the mishaps to avoid.
As with fake tan, it happens to them too.
Blend your base
It happens to the best of us, you do your makeup in bad light and realise you are two different colours. Learn from Miley Cyrus' blending blunder - check in natural light.
Eyeliner must remain on the eye line
Claudia Winkleman had a serious eyeliner issue at the GQ Awards last year. It was disastrous, and then she did it again.
Don't have one shade of face
We've discussed the dangers of bleaching your eyebrows before, and Gwyneth Paltrow illustrated perfectly why it's a made idea.
Faces have different colours and shades, don't blend them into one.
Don't copy a clown
Unless you are actually going to a fancy dress party, clown face just isn't ok. Especially if you're the face of a makeup brand.
If you're scary, you've gone wrong
OK so Lady Gaga is an easy win, but seriously what is with the white ghoul face? Do not try this at home.
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