Horrible Life, perhaps I'm wrong, but what you appear to be saying is that you want all the responsibility for telling your kids what they can afford to wear placed on someone else. Shouldn't learning to live within our means or learning to spend money responsibly be a lesson taught early in life? Or, perhaps let them buy their clothes with money they earn instead of buying them yourself?
My dad used to tell a story about my older sister all the time. She was 5 or 6 years old, and wanted a Barbie Doll in the worst way. There was a generic brand doll for a fraction of the price, but she wouldn't have it. He told her to save her money, and she could buy the Barbie Doll. Well, after saving for a month, she had enough. He said he took her into the store, and she took a long look at the Barbie, then at her money, and walked away with the cheaper doll. It was a cute story.