Best place to sell womens clothing?

I've never sold there, but what about Plato's Closet?

Plato's Closet is ok -- but they tend to only take current trend type stuff and often it is more of a "juniors/college" age styles/sizes (at least the one here is that way). Have you thought about posting any of it on FB Marketplace? That may or may not be worth the hassle of having to deliver/meet up with anyone buying but sometimes it moves things quickly.

I can't speak to on-line options but I've tried 4 consignment stores and this is what I've learned.

Pick a consignment store where you would buy clothes. Ask what percentage you get and how soon they discount.
If the store is crammed full of clothes already, yours won't stand out.
If it is one that buys things outright, you won't get much for the items.
They may say they only want things that are 3 years old but if the product is really nice and a label that sells (here that is Chicos or Talbots) they will take and sell older items.
Pay attention to the season.
Consign only a few items - 10-15 things to see how a store does with your items.
Keep your expectations low. Consignment is way better for the purchaser than the seller.

To sell my mother's things, I didn't even bother with the local stores where we had had such poor results in the past. I went to a store that sold higher end items in a higher income area - which is about an hour from me. Even so in the spring I took 30 items, they kept 11 and I got less than $70 for those. The fall stuff is doing better. They kept more and my account has almost that much money in it for only 6 items. We sold a lot of Mother's clothes at the estate sale and I think we did just as good or better which surprised me. Her clothes tended more toward fall and winter styles.

Poshmark? Thread Up? Mercarti?

Don’t do Plato’s Closet — they will buy one item for like a dollar.

Poshmark has been pretty good in my experience. I’ve only sold a few things on there, but I got a decent price for all of them.

I think here, the sister store to Plato’s is Clothes Mentor. Steph, there is a clothes mentor on Henderson near the thrift stores and I think there may be one in Pickerington or Gahanna. I’ve had good luck on local Facebook groups. Happy selling!

Lancaster has the Dress Code, which carries some really nice clothing. And Plato's Closet is also in Pickerington/R'burg. Clothes Mentor and Plato's are extremely exclusive -- they rejected items of DD's that were new with tags and very recent. I've never really understood their selection decisions.

I have used ThredUP quite a bit. You don’t make a ton of money, but it’s minimal work. You make a bit more if you get a gift card, like Athleta, instead of cash.