Should I Wear Vertical or Horizontal Stripes?

According to scientists, horizontal stripes can make you look thinner. This is because they seem to fill space more than vertical stripes do. BUT on the contrary, vertical stripes can elongate your figure and make you look taller.

Are horizontal or vertical stripes more flattering?

Scientists have discovered that the fashion mantra that wearing vertical stripes makes you look thinner is not true. In fact, horizontal stripes are more flattering to those with a less than perfect physique.

Do horizontal lines make you look bigger?

Applying the Helmholtz illusion to fashion: horizontal stripes won't make you look fatter. “A square composed of horizontal lines appears taller and narrower than an identical square made up of vertical lines. ... This illusion holds when the horizontal or vertical lines are on the dress of a line drawing of a woman.