Something like https://realtrac.com/ but please keep in mind I have no experience with realtrac, it is just an example. We have a the same issue I feel your pain. I built out a spreadsheet that does a decent job if I remember to run the updates. I wind up having to do manual inventory and updates. It kinda sucks. Source: over 1 year ago

Ily! https://us.princesspolly.com/. Source: over 2 years ago

First thing: I'd say to make sure you know your measurements and compare with anywhere you shop online, esp for dresses bc dress sizing gets so warped! I know of a few that might work for you :) First, cheaper options: cider carries a lot of cute & trendy dresses, they run really small tend to cater toward ppl with smaller busts. Lucy in the sky is the same way and they have great hoco dresses. Princess polly... Source: over 2 years ago

I forgot to mention in my original comment but Princess Polly is also great for trendy girly pieces! Some stuff is a bit too over the top for me, but I've also gotten some really great items there. They have a great return policy, and it's pretty easy to find 20% off discount codes :). Source: over 2 years ago