From typicallyspanish.com

Spanish Oddities
Put on your shirt if you want a drink in Málaga
By h.b.
Aug 19, 2008 - 6:55 PM

It may be hot and Málaga may be celebrating its summer fair, but a new campaign from restaurant and bar owners is calling for men to keep their shirts on.

A slogan ‘Más guapo con camiseta – More handsome with a shirt’ is being used during the ten days of feria celebrations. Bar owners say they will not serve men who are not wearing a shirt as it is not hygienic and gives a poor image of Málaga.