Thanks all for the helpful suggestions! To the PP, I’m 50, but minis work well on me because I’m short and they don’t actually look like minis on me . Trust me, I have no interest in showing a lot of leg and I will wear tights in any case. Thanks!

How old are you? I stop liking minis on women without hose by mid-late 40s, no matter how good the legs.

It's a work event, so I'd just dress up a black sheath.

https://www.brooksbrothers.com/the-essential-brooks-brothers-stretch-wool-sheath-dress/WX00703.html?dwvar_WX00703_Color=BLCK

But here are options closer to what you asked for, mini with skirts that flare and still enough coverage up top for business:

https://www.bloomingdales.com/shop/product/milly-tabitha-sheer-hem-mini-dress?ID=4967188&CategoryID=21683

https://www.bloomingdales.com/shop/product/aqua-mock-neck-lace-shift-dress-100-exclusive?ID=4815973

https://www.bloomingdales.com/shop/product/1.state-bubble-hem-mini-dress?ID=4924256

Can you wear a 4P?
https://www.amazon.com/S-L-Fashions-Sleeveless-Chiffon-Cocktail/dp/B0CDJKY1D7/ref=sr_1_7?c=ts&keywords=Women%27s%2BCocktail%2BDresses&qid=1707322417&refinements=p_n_shoe_width_browse-vebin%3A492383011%2Cp_n_size_browse-vebin%3A2343349011&s=apparel&sr=1-7&ts_id=11006703011&th=1&psc=1

Tuckernuck in Georgetown and Reddz Trading (consignment) also in Georgetown

Nordstrom or Nordstrom Rack. I find that all dresses from amazon have a certain look that tells me it's from amazon, they look inexpensive.

Just found out I need a cocktail dress for a work event this weekend. Any recommendations on something I can get ASAP (even Amazon!)? I’m petite - 5 feet, pretty slim/fit. A line dress are generally flattering on me. I’m thinking a mini dress would be good so I wouldn’t need to shorten. Would prefer black, nothing to sparkly or sexy since it’s with clients. Thanks for any suggestions!!