No, no, no. Americans do it all wrong
You order (or make yourself) an expresso. Tiny cup. Put in some sugar. Even if you make it very sweet, since the cup is tiny, it's not a lot of calories. Same for the cream. In a tiny cup, a drop goes a long way. Heavy jolt of caffeine, though, maybe more than those bladder-distending thick concoctions at Starbucks, and you have room for a healthy cleansing drink of water afterward!
And it's like this for food as well. Small portions, but flavorful.
This is how you keep the weight off in France.
Add lots of walking around (in Paris you take your life in your hands whenever you drive and the Metro stinks, literally), and you're suddenly skinny!