In Your Sister's Sister, Lynn Shelton directs Emily Blunt and Rosemarie DeWitt as complicated siblings, whose relationship is further tested by Mark Duplass's grief-stricken houseguest. Both Blunt and DeWitt have played the sister role before, Blunt as recently as 2008, when she starred as Amy Adams's sis in Sunshine Cleaning. From The Parent Trap to Crimes of the Heart, divine secrets to divine intervention, cinema has given us all manner of sisterhood, with no shortage of tears, laughs, and catfights. Herein are 15 films that stand out most in memory, their ladies leaving a mark as strong as a thicker-than-water bond.
Rosemary Clooney and Vera-Ellen in White Christmas (1954). Capped off by a musical number so iconic it's even lampooned in its own film, Rosemary Clooney and Vera-Ellen's sisterly link in White Christmas is a perennial favorite, no doubt inspiring countless amateur acts among gal pals. As Betty and Judy, respectively, Clooney and her cohort catch the eyes of song-and-dance men Bing Crosby and Danny Kaye, resulting in a patriotic, red-robed quartet, and, most likely, your parents' entire Christmas soundtrack. (A bit of trivia: While pencil-waisted Vera-Ellen passed away at 60, Clooney, Crosby, and Kaye, all took that magic sleigh ride into the sky at the age of 74.)