Cannes Film Festival: here’s why we like to judge stars’ looks (and what that says about us) – Psychologies.com

The pattern is well known: we slouch on our sofa, stuffing ourselves with chocolate or other treats, and we judge a performance or a star look. While the 79th edition of the Cannes Film Festival began on May 12, 2026 and continues until May 23, a slew of stars reveal themselves in their best light, putting on ever more glamorous outfits for their climbs of the steps. Obviously, to the rhythm of star looks, criticism tends to arise: between friends, family, on social networks, everyone has their say. Saint Laurent’s sculptural dressAdèle Exarchopoulostoo transparent? The dress of Virginie Efiratoo short? The look of Demi Moorenot sensational enough? You get the idea… But then, why do we like to judge the outfits of the celebrities who parade on the Croisette?

The halo effect: what is this cognitive bias?

In psychology, we could link this behavior to
the halo effect. This is a cognitive bias which consists of forming a general impression of a person based on a single fact, such as an outfit for example. This psychological effect can be both positive and negative. Problem: this bias can have serious consequences with an accentuation of stereotypes or even errors of evaluation and deeply rooted preconceived ideas.

According to a study published in November 2024 in the journal Royal Society Open
Sciencewe learn that due to the halo effect,
“Physically attractive people are perceived as more intelligent, happier, more trustworthy, and more successful in life, compared to less attractive people.” Research shows that this halo effect has significant repercussions on our existence: “Attractive people are considered better students or politicians, more qualified for a job, and are more likely to get promotions, higher salaries, or lighter sentences.” Clearly, this cognitive bias has a real impact on the way we judge others.

Criticism as a measure of personal worth

If we like to judge so much, without really knowing a person, it is also because of social comparison which allows, among other things, to situate ourselves on a social and aesthetic scale.

The goal? Develop a true sense of belonging and boost your self-esteem. Concretely, we compare ourselves to others to measure our own value. According to a 1989 study published in the Psychological
Bulletinsocial comparison plays a determining role in building self-esteem. Something to think about…