Filled Wardrobe Achievement 5,307/6,500

I've already received the 6000 items achievement though?

Have you had 6000+ previously? That might have triggered it since for some reason they've been giving out at odd times. There's a few other threads around with similar issues. If that's not the case, I'd suggest making a ticket about it.

Edit: That thread

The achievement counter reads your most items in your wardrobe as the highest you've ever had in your wardrobe. If you've taken anything out, you can drop that number but then you have to reach the original highest again then go past it for it to start counting again.

I know some of it's exceptionally glitched right now too.

It's a glitch, I had this happen a year ago except it gave me ALL the tiers. So make a ticket and sort it with staff

--I have taken out a few items, but no more than 10. I have been vending and throwing the items into my wardrobe so at this point I have added well over what I have taken out. :(

Thank you all for your help. It looks like I am going to have to file a ticket.