It's true that every body looks good in different things. Like runningfromfat (and you are considered hour glass as hips are usually a tad wider than bust for hourglass shapes), if you are chesty and have hips, having things be loose like that makes you look big all over. So, if you have a shape in teh middle, it's way more slenderizing to have form fitting.
Now people who have long middles (those who are tall with long torsos) can looks so great in long, flowing, baggy clothes. And so on. My guess is usually what you prefer for clothes is usually the best look for you.
