You have got seen the graphic. 5 clothes in a row, a tidy little caption beneath, and a assured promise that vertical stripes will make you look taller and horizontal stripes will make you look wider. It will get shared 1000’s of instances. It seems to be authoritative. Additionally it is, in crucial means, improper.
Not improper as a result of the alternative is true. Fallacious as a result of the route of the stripe was by no means the deciding issue.
I’ve been instructing line and phantasm to shoppers and to trainee stylists for over twenty years, and the identical factor occurs each time. Somebody arrives satisfied that horizontal stripes are the enemy, tries on a fantastic Breton tee beneath an open cardigan, and can’t work out why she seems to be longer and leaner than she did within the plain prime she walked in carrying.
So let’s settle this correctly.
The Query Nearly Everybody Asks Is the Fallacious One
“Are horizontal stripes slimming or widening?” has no reply, in the identical means that “is salt good in meals?” has no reply. It relies upon totally on how a lot, the place, and what else is occurring.
What truly decides whether or not a stripe flatters you is a small set of variables:
- How vast the stripe is
- How a lot distinction there may be between the stripes
- How the stripe pertains to your scale
- The place in your physique it sits
- What the remainder of the garment is doing
Course issues. It simply issues far lower than width, and it by no means operates by itself.
Vast Stripes Widen, No Matter Which Approach They Run
Right here is the only most helpful factor on this web page.
When your eye can simply give attention to a line, it slows down and lingers there. When the attention lingers, the realm seems to be greater. When the strains are too fantastic to lock onto individually, your eye skims throughout them, and an space your eye strikes shortly over seems to be smaller.
That’s the complete mechanism. It isn’t about up and down versus aspect to aspect. It’s about whether or not your eye stops or travels.
Because of this a large vertical stripe, which everybody assumes is a secure guess, can widen you. Your eye doesn’t run neatly up and down a daring vast vertical. It hops sideways from one stripe to the following, notably when there’s a change in color, and off you go, travelling horizontally throughout a garment filled with vertical strains. Panels one and two of my graphic above present precisely this. Identical route, reverse impact, and the one factor that modified was the width.
There’s good help for the eye-movement rationalization. A 2023 research in Consideration, Notion, & Psychophysics examined the basic striped-square phantasm instantly and located that it’s tied to how spatial consideration is distributed throughout the sample reasonably than to something intrinsic about horizontal or vertical strains (Kirsch & Kunde, 2023). The place your consideration goes, the obvious measurement follows.
Fences and Ladders
I’ve used this analogy with shoppers for years as a result of it sticks.
Fences run sideways (though they could be comprised of many verticals). You comply with alongside them, and also you learn the width.
Ladders invite your eye to climb. You lookup them, and also you learn the peak.
The trick is that horizontal stripes might be both. A large horizontal is a fence. A slender horizontal is a ladder, as a result of your eye can not decide on any single rung, so it begins climbing as an alternative.
That is additionally why slender horizontal stripes are at their most flattering beneath an open jacket or cardigan. The vertical opening narrows the seen stripes even additional, and the ladder will get steeper. It is among the most reliably slimming optical illusions, and it’s made from horizontal strains.
Actually, what’s actually nice, is that even barely wider horizontals act like a ladder when worn beneath an open jacket.
What the Analysis Really Says
That is the place it will get fascinating, as a result of the science has been quietly disagreeing with the favored recommendation for over 150 years.
Hermann von Helmholtz seen in his 1867 Treatise on Physiological Optics {that a} sq. stuffed with horizontal strains seems to be taller and narrower than an equivalent sq. stuffed with vertical strains. He even famous that girls’ frocks with horizontal stripes made the determine look taller. However I’m unsure what width these stripes had been (as famous above).
Peter Thompson and Kyriaki Mikellidou on the College of York put numbers on it. A rectangle of vertical stripes must be stretched 7.1% taller to look the identical peak as a sq. of horizontal stripes, and a rectangle of horizontal stripes must be made 4.5% wider to look as vast as a sq. of vertical stripes (Thompson & Mikellidou, 2011, i-Perception). Now, I feel that their research was biased, as they used an illustration of a really slim lady in a protracted gown – there have been a number of horizontals and just a few verticals. So visually it was simpler to take a look at the few verticals (thus slowing down the attention and including visible weight) while treating the horizontal instance like a ladder that the attention shortly skimmed over, making it seem extra slimming. Within the subsequent part of this submit, you’ll perceive why as I clarify one other research completed on “match” folks vs “non-fit” folks and the way that impacted how the stripes actually seemed.
So on a flat sq., horizontals win. You aren’t a flat sq..
Three issues complicate it fantastically:
1. Your beginning form adjustments the end result. Ashida, Kuraguchi and Miyoshi discovered the impact was stronger on a skinny determine than a fuller one, with a potential reversal on the fuller determine, plus massive variation between particular person observers (Ashida et al., 2013, i-Perception). Their title says it finest: the phantasm makes you look match solely when you’re already match, and never for everybody. So in case you are a mannequin, put on no matter you want and also you’ll nonetheless look slim. In case you are curvier, these vast stripes aren’t doing you any favours.
2. Distinction and lightness do their very own separate work. When researchers photographed an actual mannequin in actual clothes and managed for a way mild or darkish the material was general, horizontal stripes had a small to reasonable slimming impact, and decrease luminance had a slimming impact too, independently (Koutsoumpis, Economou & van der Burg, 2021, Perception). Two levers, not one, and I’ve talked about distinction and its influence on scale earlier than right here.
3. What you imagine adjustments what you see. A big cross-cultural research throughout Greece and the Netherlands confirmed that individuals firmly imagine horizontal stripes widen, whereas their eyes reported the striped gown as slimmer than the plain one. And the extra strongly somebody believed stripes had been slimming, the extra slimming they perceived them to be (Koutsoumpis et al., 2026, PLOS One). Now I imagine it’s because a strong color can usually present up lumps and bumps extra simply, while a busy sample ({that a} stripe could also be) means our brains can’t be bothered (actually our brains are lazy) to focus an excessive amount of, thus making it seem extra slimming.
That final one deserves a second. Your expectation is a part of the phantasm.
If you need a way of how deep this fable runs, it seems in a Japanese magnificence handbook from 1813, Miyako Fuzoku Kewai Den, which suggests we now have been passing this recommendation round for greater than two centuries with out checking it (Miyazaki & Ishibashi, 2022, i-Perception).
Why I By no means Trusted That Viral Comparability Picture
Years in the past, a research on stripes did the rounds within the press, illustrated with two drawn clothes aspect by aspect, and readers had been requested which seemed slimmer. The horizontal one gained.
Look carefully at that picture and the comparability falls aside. The horizontal gown had decrease distinction between its stripes, which makes the sample much less apparent. It additionally had a pale vertical spotlight operating down the centre entrance, which pulls your eye inward and up. That’s not a check of route. That could be a check of three issues directly.
That is precisely the issue with the graphics circulating now. They alter the stripe width, the distinction, the colors, the neckline, the silhouette and the hem size between panels, then current the consequence as proof about route. I’m not going to share extra poor examples right here, however I’ve come throughout fairly a couple of on social media that purport to elucidate how strains work, however they don’t take all of the nuance under consideration.. The minute you see totally different colors from one picture to the following, totally different distinction or totally different widths of stripes, assume that they’re utilizing multiple lever (not simply the one which they declare they’re explaining).
Diagonals Are the Forgotten Third Possibility
Nearly no person talks about diagonals, which is a disgrace, as a result of they’re essentially the most helpful strains in a wardrobe. Additionally they have essentially the most fascinating analysis behind them.
A diagonal creates motion, and the route of that motion will not be impartial. It’s educated into you by the truth that you learn from left to proper.
Your studying behavior units the place your eye begins and which means it travels. That is effectively established. Left-to-right readers land first on the left of a picture and scan rightwards, whereas right-to-left readers do the reverse. It isn’t innate both. When bilingual contributors got a passage to learn in a single route after which proven bizarre pictures, their scanning bias shifted to match whichever script that they had simply learn (Afsari, Ossandón & König, 2016, Journal of Vision). Your eyes are following a behavior, not a hardwired rule.
That behavior shapes the way you learn motion, not simply place. Psychologists name this the spatial company bias. Requested to attract a sentence like “the lady pushes the boy,” Italian audio system put the one doing the pushing on the left and the motion flowing rightwards. Arabic audio system reversed it (Maass & Russo, 2003, Psychological Science). We learn left to proper as forwards.
And ascending diagonals genuinely learn as extra energetic than descending ones. Throughout 4 experiments and a content material evaluation, researchers discovered {that a} diagonal rising from decrease left to higher proper conveys extra exercise and energy, whereas one falling from higher left to decrease proper reads as extra passive and restful (Schlosser, Rikhi & Dagogo-Jack, 2016, Journal of Consumer Psychology).
Put these three collectively, and you’ve got the reason for panels 5 and 6. A diagonal that falls away to the appropriate takes your eye down with it, in direction of the hem and the ground. A diagonal that rises to the appropriate lifts your eye up in direction of your face, which is the place you need folks wanting. Identical gown, similar stripe width, reverse consequence.
The trustworthy caveat: none of those research was run on clothes. They examined photos, sentences and product packaging. What they set up is the mechanism, and the mechanism is strictly the one at work when somebody seems to be at you. No one has but pointed a watch tracker at a striped wrap gown, which is a research I’d very very like to see.
Diagonals have a second benefit. They break up the physique with out both fencing you in or constructing a ladder, they usually comply with the pure curves of a determine reasonably than preventing them. A wrap gown, an uneven hem, a chevron knit and a diagonally draped skirt are all doing this work. Discover what number of of them wrap upwards.
One of many causes we love a V-neck prime is that it strikes the attention upwards and out (elongating) and it’s the diagonals on the entrance of this denim skirt that has made it a favorite of mine – all that crisscrossing strikes the attention, reasonably than letting it relaxation and give attention to my hips and thighs.
The Bits the Graphics By no means Point out
Each color is a stripe. When you’ve got a white shirt with slender orange stripes spaced extensively aside, you don’t personal a narrow-striped shirt. You personal a large white stripe with a fantastic orange one between. Take a look at the gaps, not simply the marks.
Match the stripe to your scale. In case you are petite, a medium or massive stripe will swamp you and appear like it’s carrying you. Medium scale, medium stripe. Tall and naturally slim, you may carry the large graphic ones. Bigger scale however curvy, a medium stripe will serve you higher than a big one.
Distinction is a quantity dial. A large stripe in two shut shades, say terracotta and burgundy, behaves nothing like a large stripe in black and white. Flip the distinction down and you may put on a a lot bolder stripe than you assume.
Longer clothes are simpler. A protracted striped gown is a vertical object with horizontal element. A brief striped prime is a horizontal object with horizontal element. The garment form is a line too.
Watch the match. Stripes are ruthlessly trustworthy. Throughout a full bust they’ll bow and go wonky, and a fantastic striped roll neck will both bunch into random strains or ring your neck like a bullseye. If the stripe goes crooked, the garment doesn’t match.
Put your horizontals the place you need breadth. Slender shoulders, a small bust, a flat seat. A horizontal in the appropriate place creates steadiness, and steadiness is way extra flattering than shrinking.
Your Two-Second Altering Room Check
Stand again from the mirror, additional than feels pure, and ask one query.
The place did my eye go first, and did it cease there?
If it stopped someplace you’d reasonably it didn’t, the stripe is a fence, and it’s within the improper place. If it travelled upwards in direction of your face, you have got a ladder and you should purchase the factor.
That’s it. No guidelines to memorise, no route to worry. When you perceive that you’re merely managing the place the attention travels, you cease being on the mercy of a garment and begin being the one operating the phantasm.
Need to know precisely the place your personal horizontals and verticals ought to sit? That’s mapped out for each form in my Physique Form Bibles, and lined in depth inside 7 Steps to Style.
Additional studying:
How to Wear Horizontal Stripes Without Looking Wide
Is That Stripe Slimming or Widening? Discover the Rules of Stripes
How You Can Use Verticals To Look Taller and Slimmer
E is for Elongation
Which are More Slimming, Horizontal or Vertical Lines?
