Amber Heard has the world’s most beautiful face, according to scientific theory.

With the use of face mapping techniques, Johnny Depp’s estranged ex topped the list which also featured Kim Kardashian, Jennifer Lawrence, Kate Moss, Kendall Jenner and Selena Gomez.

Technology developed by Harley Street physician Dr De Silva maps faces digitally and uses the ancient Greek beauty ratio Phi to determine what makes a beautiful face.

The ratio uses 12 key markers - the lips, nose, eyebrows, forehead and facial shape among others.

Amber had the highest percentage for perfect features and also had the best chin and nose, while Kim had the best eyebrows and Kate Moss had the best forehead.

(Image: CAVENDISH PRESS) (Image: CAVENDISH PRESS)

The study's top 10 most beautiful women:

1. Amber Heard with 91.85 per cent

2. Kim Kardashian with 91.39 per cent

3. Kate Moss with 91.06 per cent

4. Emily Ratajkowski with 90.8 per cent

5. Kendall Jenner with 90.18 per cent

6. Helen Mirren with 89.93 per cent

7. Scarlett Johansson with 89.82 per cent

8. Selena Gomez with 89.57 per cent

9. Marilyn Monroe with 89.41 per cent

10. Jennifer Lawrence with 89.24 per cent

(Image: CAVENDISH PRESS) (Image: CAVENDISH PRESS) (Image: CAVENDISH PRESS)

"We have devised a brand new computer mapping technique which can calculate how to make subtle improvements to facial shapes,” De Silva said of his research.

"With this ground-breaking technology, we have solved some of the mysteries of what it is that makes someone physically beautiful.

"After we had created the software and the algorithms for the key marker points on the face I thought it would be a good idea to test the system on some of the most beautiful women in the world and see if we could prove with geometry and science exactly what it is that makes a beautiful face.

"The results were startling and showed several famous actresses and models have facial features that come close to the ancient Greek principles for physical perfection. Amber Heard had a near perfect ratio of nose dimension 99.7 per cent and her chin was also almost perfect. Across the 12 key markers for nose, lips, eyes, forehead, chin and facial symmetry and shape Amber Heard had the highest combined score.

"The Phi ratio of 1.618 has long been thought to hold the secret for beauty, but now with the computer mapping we can calculate how it applies to real women.”