The khaki would look too casual, but wearing black Capri's coupled with a heel is better.  Choose a blouse that will look good with the shoes. Costume can be good to wear in special occasions like a . Black is good to wear as long as it is coupled with a light colored top.  Make sure that you have your nails pressed.  Have them painted with light colors so that it can complement whatever the color of clothes you will put on.

Also look out for the kind of under garment that you will wear. For one it is embarrassing to distinguish the panty lines in your slacks.   So perhaps you can wear thongs because they can be visually more appealing that the panty.

It's also best that you wear a bra that fits well.  Having someone professionally fit the bra can help.  Remember that a bra that is too small especially around the back results to bulges that may look unpleasant under sweaters.  On the other hand cups of the wrong size can result to bulging if the cup size is too small, and wrinkles if the cup size is too big. It is advisable for ladies to opt for unadorned and flawless cups so that they will look sexier and more attractive.