Guys, You're 12% Hotter in a Plain White T And it's particularly effective for the less fit By Matt Cantor, Newser User Posted Jun 25, 2013 9:00 AM CDT 27 comments Comments Plain white t-shirts make you 12% hotter. (Shutterstock) (Newser) – Note to guys re: looking good: Keep it simple, with a secret weapon. A plain white T-shirt can make a man some 12% more attractive to women, and it actually appears to work better for men who are less shapely, scientists find. Such shirts make the shoulders look broader and the waist thinner, offering a masculine V-shape, the Telegraph notes. In the study, men wore plain shirts as well as ones with T-shapes printed on them; some were printed upside-down or in different sizes, the Daily Mail reports. Men wearing upside-down Ts were seen as less attractive to respondents—30 women ages 18 to 25—perhaps because it emphasizes the stomach. The hottest T-shirts were those with the horizontal part of the T as long as or longer than the vertical part, says a psychologist. Men look best with shoulders about 20% wider than their hips, the researchers say. "Clearly there are individual tastes and preferences, but we can see here how fashion could have an implicit positive or negative effect on perceived attractiveness and health."