The "imvu-pornstar" tag refers to a type of adult content specifically created for the virtual world and gaming platform IMVU (Instant Messaging Virtual Universe). In this context, "pornstar" indicates that the character or avatar is modeled after a well-known or professional adult film actor/actress. These characters are often highly detailed and realistic, designed to closely resemble their real-life counterparts, and can be interacted with in various virtual settings within IMVU. They may also come with special animations or features that are specific to the pornstar character. The tag is used to identify these avatars as being based on real-life adult performers for those who are familiar with the individual(s) and/or the platform