42 Design and development of interactive multimedia software and for extended reality virtual environment software, namely, software for virtual worlds; Virtual reality and augmented reality software design and development services; Graphic art design services; Computer graphics services; Graphic design service for creating avatars, digital twins, digital humans, digital doubles, and accessories for avatars, namely, items of clothing, jewelry, piercings, tattoos, make-up products, haircuts, hair, hair coloring, tools, toys, logos and emoticons used in connection with avatars; Computer programming, namely, technical design services of avatars, digital twins, digital humans, digital doubles, and for avatars, namely, items of clothing, jewelry, piercings, tattoos, make-up products, haircuts, hair, hair coloring, tools, toys, logos and emoticons used in connection with avatars; Graphic design, namely, animation, simulation, visualization of avatars for use in extended reality virtual environments, namely, virtual worlds; Computer programming, namely, technical creations of avatars for use in extended reality virtual environments, namely, virtual worlds; Computer graphics design services, namely, character rigging, face rigging, character modeling and face modeling, for use in the creation, development, production and operation of animations and visualizations in linked interactive worlds and non-gaming, virtual reality, augmented reality, mixed reality and extended reality environments; Volumetric image scanning services for humans, animals and objects for the creation of characters or digital representations; Providing online non-downloadable virtual reality software for providing multi-user access to a virtual fitting service in extended virtual reality environments, namely, virtual worlds; Providing online non-downloadable computer application software that allows users to create and use avatars, digital doubles, digital humans, digital twins, symbols, graphic icons, images representing or not representing individuals, graphical representations of peoples, places and objects that can be uploaded, shared and transmitted through multimedia messaging (MMS), text messaging (SMS), electronic mail, chat rooms, global computer networks, telecommunication networks and extended virtual reality environments, namely, virtual worlds; Providing on-line non-downloadable software for creating, modifying and manipulating virtual environments, avatars, digital twins, double humans, and digital humans, the functions and characteristics of the avatars, digital twins, double humans, and digital humans, virtual objects, and virtual third party consumer products simulated in extended reality virtual and augmented environments, namely, virtual worlds; Providing on-line non-downloadable software for enabling the use of avatars to virtually try on products, specifically, clothing, jewelry, piercings, make-up, haircuts, hair coloring, beards, mustaches, logos and emoticons in virtual extended reality environments, namely, virtual worlds, or to simulate situations, specifically, games, medicine, or communications, namely, video conferencing; Development and design of virtual reality software for the creation of virtual stores, virtual retail stores, and virtual exhibition of products and accessories, namely, clothing accessories, jewelry, piercings, tattoos