What matters most is how well your clothing suit your body, not how much money you spend on them. The last thing you want is for your date to get annoyed by your sloppy outfit. A tailored (but not skin-tight) silhouette, in which your clothing hug but do not constrict your body, is usually the way to go. A fitted dinner jacket, straight-leg trousers, or a slim button-down shirt are all good choices. It's more about how you wear your clothing rather than having them to wear you.