-basic tops in all colours
-a nice fitting well blazer (black is the most useful colour)
-maybe not on the most wishlists, but a skirt can look very well on a sunny day
-black trousers/little back dress, for chique dinners or partys.
Do not think that a outfit with basics absolutely BORING is, it can look even more stylisch if you have perfect fitting and matching clothes. Are you really afraid that it is going to be a unfashionable outfit, use one of these tips:
-add a remarkable accesoire like a statement necklace or a big bracelet
-scarfs can be very fashionable if the have a interesting print or just nice fabric
-to accentuate your waist you can take a little belt
-lipgloss/lipstick or eyeshadow in a nice color can also make the different between 'just' a outfit or a impressing outfit
-last but nog least: try! Don't be shy to just do what you like to do. What seems as a silly idea can be great if you wear it. Dress to impress!