A Dress You Will Ruin

This weekend I have a task that is a bit odd. I am looking to buy a dress that I am totally going to ruin. How you ask? Oh I am going to pour fake blood all over it! I am not usually that into Halloween but it's a big deal at work. So I am going to probably do something I haven't done before -- still not totally sure I can just do it -- buy a used dress. I'll have to ponder this. I hate the idea but it is much more practical.