It’s official: Science has proven Cheryl Cole to be a perfect and flawless human being.

According to a study conducted by Dr. David Holmes of Manchester Metropolitan University’s psychology department, there’s an exact formula for the perfect smile, based largely around facial shape and “smile technique.”

From the Daily Mail:

Dr Holmes found that different muscles are used – particularly around the eyes – in sincere smiles, and these help to create a smile people find attractive. People who can ‘smile with their eyes’ are better smilers – but it’s a difficult effect to control.

Of course, we already knew this thanks to a woman named Tyra Banks, who taught us all the importance of smizing in every situation. But now, we have a scientific grasp (thanks to an amusing chart) of the Girls Aloud star’s true flaw-free nature.

He said: ‘Cheryl Cole is a great example of the perfect smile. It’s no coincidence that she has been such a success and become the nation’s sweetheart.

‘Her smile helps her come over as genuine, attractive, and engaging.’

If the teeth and lips are in good condition, with a fleshy ‘cupid’s bow’, people respond even more strongly, he said.

So there you have it: Stone cold science. Irrefutable proof. Cheryl Cole is objectively perfect (her smile, anyway), and your fave’s fleshy cupid’s bow could quite literally never.