Amsterdam’s unofficial tourism slogan: Come for the weed, stay for the hookers.

But beginning this April, one of the world’s most permissive cities — where pot-slinging coffee shops are heavily tolerated as falling in a legal gray area and prostitution is 100-percent lawful — becomes a little bit less loosey-goosey.

In the city’s three red-light districts, hookers sexily display themselves behind glass windows — but soon, gawking at them will be verboten.

According to the Daily Mail, city authorities will impose fines on tour guides who allow their customers to stare at the women in the windows.

If they can’t control their groups, individual guides will be docked $235 and the tour companies can get whacked for nearly $1,200.

The women, who make as much as $485 per day, clearly have no interest in doling out visual freebies. Additionally, the stare-downs are said to be disrespectful and make ladies of the night uncomfortable — especially when drunk tourists leer and shout crude comments.

Hey, there’s always the Real Doll brothel — where, presumably, touch-but-don’t-look policies are not yet in place.