If a creator doesn't want you to see their mesh or texture rips, the server will respect that block. Any tool claiming to force-respect that is lying.
The term "exclusive" is frequently used by sites to suggest they have access to data that other viewers do not, often as a marketing tactic to attract more users. How Outfit Privacy Works on IMVU imvu e hidden outfit viewer exclusive
If you can identify one part of the outfit (like a specific set of wings), look it up in the Shop. Check the "Derivations" or "Products using this" sections. Often, users buy items from the same set of creators. IMVU Hidden Outfit Viewer Exclusive: A Step-by-Step Guide