I've been using this site that somebody mentioned awhile back and it's really handy!

http://www.myclothingcalendar.com/

I have not used it yet to determined what I wore when I was last with certain people, but I'm sure I will since I'm always trying to remember. The thing I like so far is that is keeps track of how many times you have worn an article of clothing so you can see what you wear the most and what maybe needs to be worn again. I've been wearing so many things that tend to get overlooked just to put them in my closet on this site. If I'm ever at a loss for what to put on I can refer back to this for help.

Thanks to whoever it was who mentioned it. I can't seem to find the old post right now! Check it out, it's fun!