Hi!~ Such a cute skirt, I have some in real life that I wish could be uploaded into SL!
Regarding your question, I know {amiable} has several skirts similar to that in a variety of prints and colors. I can't login to SL right now but I found a few from {amiable} on the Marketplace. Once, I can get back on to SL, I can look at my inventory and send you some more places if you would like. I think S@bbia might have some too. I can't think of anything else (for sure anyways) atm. I added two outfits with the skirt too~
{amiable} Flared Midi Skirt - Fatpack, {amiable} Natural Cardigan and Flared Midi Skirt / Outfit - Fatpack , {amiable} Sailor Blouse and Midi Skirt
The skirts are sold individually too, in case you don't want a fatpack.
As for tops, there's so many in SL! Do you have a preference? or an example? Something elegant to me might not be to you. {amiable}, Tres Blah, Cest La Vie, and Blueberry have some of my favorite tops~ Feel free to IM me in-world if you want to go look at some stuff together or I can just send you landmarks if that's easier for you! Whichever is more convenient for you :3 Also, may I ask which body do you have? It will help me filter brands that don't cater to your body~