The beauty team at HELLO! Online have often wondered how Kim Kardashian achieves her flawless, paparazzi-ready complexion.
Even close up, her skin glows, while her cheekbones, nose and jawline are always perfectly shaded and contoured.
Now, the reality TV queen has let us, and her 16 million Twitter fans, in on her secret.
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Working with celebrity make-up artist Scott Barnes, who has also worked on the likes of Jennifer Lopez and Sheryl Crow, she posted a series of during and after pictures of her trick – concealer.
The accompanying caption read: "Wanna see how @scottbarnes68 contours?"
We already knew that Kim was a big fan of applying lighter concealer under her eyes – it adds a wide-awake brightness.
But she also applies it to the T-zone area – the middle of her forehead, along the length of the nose and the tip of her chin.
This technique actually helps the lightened area stand out, meaning that the lesser highlighted areas fade out slightly for a thinner effect.
Adding to this is the contouring that Kim also showed off on Twitter.
Spot the brown stripe in the hollow of her cheek, that was then blended out to look natural but define her face.