I went through the kids clothes with them the other day. The little one is quite fickle, and frequently decides she doesn't like items of clothing. I pulled a huge armful of clothes out based on her vetos. I may keep them around for a week or so in case she changes her mind--some of them are really cute. Then, out the door, cuteness be darned.
The big girl didn't have as many things she didn't like, though she did pass most of her dresses to the little one. The big one hardly ever wears dresses, despite loving them a year or so ago. Her choice, though, so why keep what she won't wear?