With the rising popularity of rigged mesh clothing and accessories, we
have discovered that it is difficult for shoppers to be sure that
designers are creating mesh clothing in sizes that will suit their
avatar shapes. Likewise, it is impossible for designers to know how to
size their rigged mesh clothing because of the extremely wide range of
shapes used in Second Life. In response, we have developed a solution:
the Standard Sizing system. Following the link below will
inform you more about the details of this system and hopefully encourage
designers to implement it and consumers to take advantage of it.
https://marketplace.secondlife.com/p/Standard-Sizing-Package/2894727