Christine Quinn 's "Selling Sunset" chapter could be reopening ... TMZ has learned. Multiple sources familiar with the situation tell TMZ ... production for the Netflix hit series is gauging Christine's interest in a possible return for Season 10, asking whether she'd consider coming back. We're told premature conversations have taken place and are ongoing ... but nothing is official, and no contracts have been signed. Christine starred on the show from Seasons 1 through 5 and quickly became