In reality, the toga was worn by the people of the Roman Republic (509 BC - 27 BC). Despite what you may have also seen at a Greek function in college or on my favorite episode of Saved by the Bell (you know, the one where Zack takes his Dad's car without permission to go to a toga party, gets drunk and crashes the car? I tried to find a picture I really did!), togas were not worn alone. Rather, they were worn over a tunic and showed very little skin. Speaking of tunics, now a days tunics are a garment for women whose length is in between a shirt and a dress. In Roman times, a tunic was worn by men and women, had short sleeves and hit above the knee although some variation were shorter.
Back to the most famous one piece garment. Togas came in all different colors which indicated one's freedom (aka you were not a slave), political status, and psychic abilities. Yes, that's right. Augurs were religious folk who predicted the future who wore multi-colored stripped togas. In the first century BC, togas were restricted to male citizens of Rome. After this time, the only women that donned togas were prostitutes or women who were divorced on grounds of adultery. Women of status then wore a stola over their tunic and a palla, a veil like garment, to cover their head. In the pictures below, the stola has been Photoshopped a lovely green to distinguish it from the tunic and palla.
The color coding of togas is quite extensive and if I wrote about it this post would be way too long but it is really interesting stuff. I highly recommend anyone who is interested in this period in history look into it.