let me lay some more info on you! they're the kids of bernard arnault, ceo of lvmh. the older sister would be 30+ and his full sister (so anne dewavrin would be her mom), while the younger sister would be born after 1991 and would be a half sister (so hélène mercier-arnault would be her mom and she'd have two other full blood younger sisters too). i was thinking the older sister was probably slightly more serious, and probably already involved in either lvmh or one of their companies in some position, and is probably just as exasperated with guy as their dad is that he's less than interested in joining the family business. they'd be french but guy went to school in the us and splits his time between paris and nyc.