If you’ve never been to an SCA event before and don’t really know anyone in the SCA, you may probably have no idea what you can wear to your first event. You might think it needs to be elaborate or expensive to work but this is not the case. Depending on what you have in your closet, you may be able to pull something out that will work easily or with slight modification. There are some things you need to be careful of in the SCA however.
Simple garb, as medieval clothing is called, is really all you need to wear. Women just need to wear a simple, long skirt and basic peasant blouse. Men can wear plain trousers, no jeans, with a peasant shirt out, not tucked in. For shoes in the SCA wear plain slippers or black boots. As a woman, you can wear a circlet with a white piece of cloth over your hiar, but make it a simple circlet. Anything ornate or with jewels and you can, and probably will, be mistaken for royalty.
You do need to be carful of a few things like belts and certain colors. In the SCA a white belt, sash, or baldric (which is a belt across the chest) is for members of Chivarly only. Red, green, or yellow belts are for students of a particular person who has been honored in the SCA for something, such as a knight. In fact, red is an indication of a squire to a knight. Chain link necklaces without ornamentation also have meaning in the SCA, so do not wear those as well.
If you do not think you have any of these things in your closet, you can make them yourselves from sewing patterns. They are not completely accurate but most people will not say anything about that. You could find someone in your group who will trade an outfit with you for some other item that you can make or get for them. Or you can even buy one from stores online. Don’t worry about it too much though. The more events you attend, the more opportunities you will have to acquire clothes.