
Which lips do YOU think are most attractive? Scientists reveal the most desirable pout - so, do you agree?
But what exactly does the perfect pout look like?
A new study has revealed the answer - and it's bad news for fans of lip fillers.
Scientists from the American University of Beirut showed 200 people AI-generated pictures of a woman, whose lips had been adjusted in various ways.
An analysis of their preferences revealed that the perfect pout features an upper-to-lower lip ratio (U/L) of between 0.618:1 and 1:1.
Meanwhile, the most highly rated lips had an upper lip height of 25 per cent of hemi-lip width.
According to the researchers, this suggests that overinflation of lips is regarded as 'unaesthetic and unattractive.'
'Though social media have an influence on perception of beauty, data provided by the survey confirm that golden standards of aesthetics remain constant and that exaggerated requests of some patients may not be attributed solely to social media influence but probably to social media in combination with additional personal predisposing factors,' the researchers said.
While cosmetic procedures like Botox and lip fillers were once seen as taboo, they're becoming increasingly popular around the world.
In fact, a poll carried out by VICE UK found that over half of Brits now see these procedures as comparable to getting a haircut or a manicure.
However, until now, how, or if, this surge in popularity has affected beauty standards has remained unclear.
'Many patients at present bring with them pictures of celebrities and demonstrate the interest of not only becoming beautiful but also looking similar to the 'Hollywood star' prototypes, expecting outcomes that are out of proportion with established standards of beauty,' the researchers explained in their study, published in Plastic & Reconstructive Surgery-Global Open.
'Unfortunately, overtreated patients and overzealous practitioners are becoming very common.'
To get to the bottom of it, the researchers used AI to create a picture of a white female face, whose lips had been adjusted for both U/L lip ratios and fullness.
A total of 200 participants were then asked to rate the lips from the most to the least aesthetic and attractive.
In the first set of images, which had been adjusted for fullness, lips were rated most highly when there was an an upper lip height of 25 per cent of hemi-lip width.
In the first set of images (left), which had been adjusted for fullness, lips were rated most highly when there was an an upper lip height of 25 per cent of hemi-lip width. In the second set of images (right), which had been adjusted for U/L lip ratio, the lips with a U/L of between 0.618:1 and 1:1 were rated as most attractive
In the second set of images, meanwhile, which had been adjusted for U/L lip ratio, the lips with a U/L of between 0.618:1 and 1:1 were rated as most attractive.
This will come as good news for stars like Angelina Jolie, Anne Hathaway, and Scarlett Johansson, who are known for their full, yet balanced lips.
In contrast, the overfilled lips were rated as the least attractive.
This may disappoint stars with plumped-up lips, including Charlotte Crosby, Tulisa, and Lisa Rinna.
The researchers hope the findings will encourage people considering lip fillers to opt for more natural looks.
'Because full lips have historically been a major component of overall attractiveness and a youthful appearance, lip augmentation with soft tissue fillers has become one of the most popular and commonly performed minimally invasive procedures,' the team concluded.
'Despite variable lip shape preferences based on ethnicity, country of residence, and profession, and regardless of the influence of other facial features, an 'ideal lip' is characterized by lower and upper lip balance of subtle proportion bringing out the best frame for smile.
'Ideally, the objective of lip augmentation is to create smooth lips with adequate volume and natural appearance and not to overaugment.'
HOW HAVE IDEAS ABOUT THE 'PERFECT' FEMALE BODY CHANGED?
Perceptions of the ideal female body can be linked to representations of women in media, whether found in pop culture, fashion or even politics.
These images of feminine attractiveness have changed significantly over the years.
1910 The Gibson Girl - An image produced by American graphic artist Charles Dana Gibson depicted the ideal female figure as tall and regal with an S-curve torso shape
1920 The Flapper - Cultural change sparked by the suffragette movement gave birth to short hair, knee length dresses and a more rambunctious, yet petite, view of female beauty
1950 The Hourglass - Voluptuous curves became important following the end of WWII, which also saw the creation of one of the most influential female bodies, Barbie
1960 The Twig - British cultural icon and model Twiggy brought forward an androgynous look in female ideals where small breasts and thinness were key
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