Popping over from UX.SE to clarify a little. My apologies for bumping an old topic with an additional answer - I would comment if I could.
While not being an expert in UX, I would argue that "look and feel" is a subset of User Experience and not the entirety of it. User Experience encompasses not only the visual style of something, but also the perceptions and emotions that go along with using that something.
"Look and feel" more describes more the visual style of the application/site -: colors, sizes, fonts, or anything that you'd usually be able to change via "skins" or "themes".