Can I Justify buying Uggs for the Winter?

I know there are more important things to discuss, but this has been weighing on my mind. Can I buy Uggs this winter? Almost three years ago my husband bought me the most beautiful pair of white Uggs. They were purchased at a time when they were sold out everywhere. On one of his business trips to Washington D.C. he peeked into Nordstrom and took the last pair of size 10's. I am sure you are wondering why I would need another pair, well here's the problem. They are so dirty! I have googled and called everything and everywhere I can think of. There is no way to get them as clean as I feel would make them presentable. So can I buy another pair? Would showing up at school pick-up in a brand new pair of Uggs make all the fashionistas cringe? Can I be three years too late, but justify it my telling everyone they are my second pair? Oh the dilemas this mommy faces.