My take on full skirts in a nutshell:
It is possible to wear a flattering full-circle skirt. Get one that is cut in gores, so that it is fitted through the waist and upper hips, then flares out sharply about 6" below the waistline.
If you opt for pleats, get pleated skirts that have the pleats stitched down over the hipline, releasing just below the fullest point of your hips.
If you end up getting a gathered skirt, get one in a crisp fabric, like taffeta or cotton percale, so that the bulk is obviously structural. Wear a very fitted blouse above it.
The length of your skirt makes a big difference, too. Knee-length can be murder on us women with muscular legs. Ballet-length/tea-length tends to look particularly awkward on women with extremely skinny or pudgy calves--best look for someone with shapely, yet slender legs. Short and full can be cute, but it can also look like those insane mini-crinis from the 1980s, so consider what look you want to reference.
I love fuller skirts, myself, because I don't have very curvy hips, so it evens out my figure a little bit. I rarely wear a skirt that isn't at least a-line, and most of my long skirts are swirling gored affairs (rather Gibson Girl in intent and overall silhouette).