RE: Who played Rachel’s other sister in “Friends” and what episodes does she appear in?
Rachel's other sister in Friends, Amy Green, was played by Christina Applegate. Applegate's character was a self-absorbed, somewhat thoughtless person who often landed Rachel and the others in comical situations. Amy Green is a recurring character who appeared in two episodes of the show. Both episodes are in the 9th season: 1. "The One with Rachel's Other Sister" (Season 9, Episode 8): On this episode, Amy shows up unexpectedly on Thanksgiving. Unsure about Emma's future, Amy decides that if Rachel and Ross die, she should take care of their daughter, which leads to a dispute between her and Monica about who would be a better guardian. 2. "The One Where Rachel's Sister Babysits" (Season 9, Episode 5): In this episode, Amy visits again and offers to babysit Emma, but ends up misguidedly piercing Emma's ears. Christina Applegate’s performance as Amy Green was so well received that she won an Emmy in 2003 for Outstanding Guest Actress in a Comedy Series.