I signed up for an online service called missussmartypants.com. You get a weekly general e-mail (which is free) that has a fashion topic and a mission for the week - it might be to clean your closet, or wear a dress, or wear accessories every day for a week, or wear tall boots, etc. If you pay for a subscription, on Thursdays you get a personal shopping guide for the week. When you sign up you pick your body type (so everyone from petites to plus sizes can get styles for them) and you get pictures of what's in style for that body type for tops, bottoms, dresses, shoes, accessories etc. You can even click on the pics and shop on-line. The service varies the retailers featured in the shopping list each week - some weeks it's higher-end stuff like Nordstrom, Ann Taylor, or Talbot's all the way down to Target on the other end of the spectrum.
I bought a 1-year subscription and really love it. I don't shop on-line (hard to fit) but by seeing styles week in and week out, I know what to look for when I do shop. I can go through a whole store and quickly grab the few pieces that I know will work - I now know the most flattering cuts, colors, fabrics and styles for me and can easily ignore everything else.
Look into this service - it's not a ton of money and what you save by buying clothes that you actually wear again and again will more than pay for the subscription.