I agree with Dawn. Something you would consider business casual, comfortable yet more on the business side than the casual side. Remember, accessories are your friend. Ex. yesterday I had to work the booth at a trade show. I paired black pants with a fawn colored sweater, black flats and a long pretty necklace that was navy, pretty sparkly crystals, and pearls which I knotted towards the bottom and some pretty bracelets. Simple, comfortable, but the necklace and bracelets kicked it up a notch. Mascara and I was good to go (no need for lipstick as we had to wear masks all day).
You've got this. Don't kill yourself if you don't have a necklace you like. A scarf would be nice too.
M 20+ T25+ S ~15.5 (BD) BD 4/6/15 D 12/23/16
"Someone I loved once gave me A box full of darkness. It took me years to understand, That this too, was a gift." ~ Mary Oliver