Getty/Kevin OstajewskiParis Hilton and Nicole Richie are getting ready to be reality TV stars all over again -- 'cause the 2000s darlings are teaming up anew to run it back ... but for a whole new project.
Production sources tell TMZ ... Paris and Nicole are both on board for a new series that they'll both star in, but we're told this ain't gonna be an exact duplicate of "The Simple Life," per se -- their famous show from back in the day that pretty much put them on the map.
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