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PARIS, Dec 2 (Reuters) - French cosmetics group L'Oreal will "definitely" look at an investment in Italian fashion group Armani and start working on it "very soon", Chief Financial Officer Christophe Babule said during a fireside chat with analysts on Monday. 

Armani's will instructed heirs to gradually sell the fashion house he created or seek a market listing, starting with a 15% stake within 18 months, giving priority to L'Oreal, luxury conglomerate LVMH, eyewear maker EssilorLuxottica or another group of "equal standing". 

(Reporting by Dominique Patton; Editing by Tom Hogue)