Around 5-7k a year. I go to malls, outlets, and sometimes boutiques once a month just to have a little fun.
My family teases me about it, but then goes on $200 bar nights every weekend, and buys $10 packs of smokes.
I don't like spending a lot on individual pieces though. Most expensive piece of clothing I ever bought was a $1,800 Burberry jacket. It wasn't worth it, but don't necessarily regret it though.