Jill Green is Rachel's youngest sister. Jill comes to the apartment looking for Rachel (the only daughter their father is proud of) and attempts to start a new life, as Rachel did. Jill ends up breaking the rules (shopping to excess thanks to her having memorized her father's credit card numbers) and dates Ross to spite Rachel. However, Ross ended the relationship before it could really start after realizing that, if something happened between him and Jill, nothing could ever happen between him and Rachel; although he didn't know whether or not he and Rachel would ever get back together, he didn't want to know that they never could. This caused Jill to leave, as she didn't want to stay around with someone who sabotaged her every move, bitingly asking Ross if he was gay (based on his rejection of her even after she threw herself at him) before departing.

Despite conflicts, Rachel appears to get along with Jill far better than she does with Amy. According to Amy, since her appearance in the show Jill has gained weight around her "butt and face", but this has not been confirmed.


  • In The One Where Rachel's Sister Baby-Sits, Amy tells Rachel that Jill has got fat, despite her being lactose intolerant.
  • According to production reports, the original plans for Jill would have featured a six-episode story arc, but on-set tensions between Jennifer Aniston and Reese Witherspoon meant that Jill left after only two episodes (This may also account for the unconventional nature of the subsequent two-parter "The One That Could Have Been").
  • In The One With Rachel's Other Sister, Rachel stated that Jill is her favorite sister.
  • Before meeting her, Phoebe called her the spoiled sister.


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