Shape of a specific part extends to the neighboring part.
This effect is called shape echo.
Choose clothing with suitable shapes
For example, round neckline on a garment can make your face appear rounder, while V-neckline can make your face taper towards the chin.
Raising eyebrows can elongate your face
Researchers have found that when outer corners of eyebrows are raised, outer corners of eyes also lift. This results in more defined cheekbones and chin, and face appears longer.
slanting the eyebrows by 16° caused a perceived slanting of the eyes by 3° in the same direction.1
It is likely that similar result can be achieved with shape of eyeglass frames.
Shoes with a pointed toe make the legs appear longer
If the toe of shoes is long and narrow, then legs will also appear longer along with them.
Neck and face also reflect each other
By exposing neck, you can visually make it appear thinner, and face smaller. On contrary, wearing sweater with thick collar will broaden face. This is not desirable, especially if face is already wide.
Morikawa, Kazunori, ‘Geometric Illusions in the Human Face and Body’, in Arthur G. Shapiro, and Dejan Todorovic (eds), The Oxford Compendium of Visual Illusions (New York, 2017; online edn, Oxford Academic, 22 June 2017), https://doi.org/10.1093/acprof:oso/9780199794607.003.0026, accessed 19 July 2023. ↩
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