Baby shower dress?????

So I'm having the hardest time finding a dress for my babyshower. I thought what I wanted would be simple to find but it's not. 😐😐😐 What do you guys think about this? 😕 It's not exactly what I was looking for but it's the closest that I can find to it.
Does anyone know any place that I can get a long purple dress with long sleeves?