Avatars in Second Life
From Sl Wiki
"Avatar" is the term for a virtual body used to represent the Second Life user. Although an ancient word, it derives its SL meaning from Neal Stephenson's cyberpunk sci-fi classic, Snow Crash - a book that inspired many developers to build virtual worlds, and that also gave us the term "Metaverse", often taken to refer to the (distant!) 3D internet.
If you really like your SL Avatar, you can get it made into a Real Life model by fabjectory