Black and peplum seals the deal, don't you think?
Here is a piece in a lighter color, a shade in between red rose and pink, which I truly adore.
The following pieces don't really fall into what I mentioned above -clean cut and tailored outfits that show sophistication and professionalism - they're more of ladylike/feminine pieces (vibrant colors, patterns, texture, cut-outs) but if you just add a blazer or a sweater, well, you've got what it takes to look professional.
This one is fierce! From daytime to nighttime.