London, Dec 22 (ANI): Canadian pop singer Shania Twain has the perfect face but Hollywood actress and renowned beauty Angelina Jolie doesn’t, according to scientists, who have worked out the dimensions of the most attractive female face.

They say the key to the ideal arrangement of female facial features is the measurements between the eyes, mouth and ears, reports the BBC.

In their study, led by the University of Toronto, the researchers asked students to rate the attractiveness of colour photographs of the same woman’s face, laid out side by side.

Using photoshop, the researchers altered the vertical distance between the eyes and mouth, and the horizontal distance between the eyes in each image.

The features themselves never changed, just the distance between them, and the woman’s face was only compared to her own.

Following a series of experiments, the researchers came up with the most attractive length and width ratios between features.

On length, the distance between a woman’s eyes and mouth should be just over a third or 36 percent, of the overall length of her face, from hairline to chin.

For width, they calculated that the space between a woman’s pupils should be just under half, or 46 percent, of the width of her face from ear to ear.

Fortunately, the researchers calculated that these ratios correspond to an average face.

The researchers said women who did not fit the “perfect dimensions” had no need to resort to extreme measures, such as plastic surgery.

They said hairstyles could be used in effect to create an optical illusion.

Professor Kang Lee, lead author of the study, said that the Jolie’s did not fit the golden ratio either for length or width.

British actress Elizabeth Hurley scored on the golden ratio for length, and just missed out the width measurement.

However, both were eclipsed by Twain, whose face has a perfect set of geometric measurements, according to the results.

The study appears in the journal Vision Research. (ANI)