Sisters

• Mia Sara and Molly Parker
• Elliot Page and Linda Cardellini (could also be sister and sibling, as Elliot Page is nonbinary)
• Erin Chambers and Jewel Staite
• Famke Jannsen, Julianna Margulies, and Julia Roberts
• Leanne Lapp and Sarah Rafferty
• Julia Stiles and Kirsten Dunst
• Liane Balaban and Kristen Stewart
• Famke Jansen and Morena Baccarin
• Elizabeth Reaser, Samantha Smith, and Paget Brewster
• Jennette McCurdy and Alona Tal
• Musetta Vander and Meredith Monroe
• Gloria Votsis and Brooke Lyons
• Wendy Makkena and Susan Sarandon
• Alicia Witt and Diane Neal
• Judy Greer and Jackie Geary
• Valerie Cruz and Jaqueline Obradors
• Riki Lindholme and Amanda Walsh
• Jeri Ryan and Rachel McAdams
• Brittany Ishibashi and Stephany Jacobsen
• Chasty Ballesteros and Dichen Lachman
• Sprague Grayden and Taryn Manning
• Tori Higginson and Mary Page Keller

Brothers

• Matt Czuchry and Xavier Samuels
• Grant Gustin and Colin Hanks
• Luke Kleintank and Patrick Stafford
• Russel Richardson and Idris Elba
• John Edward Lee and Karl Urban
• Bug Hall and John Krasinski
• Rob Kerkovich and Joel David Moore
• Linden Ashby and Louis Herthum
• Michael Drayer and Elijah Wood
• Mike Bradecich and Zachary Knighton
• Chris O’Donnell and Michael Cram
• Joel McHale and Graham Hamilton
• Tony Curran and Tom Schlaney

Brother/sister

• Sarah Stouffer and Sterling Knight (could be twins)

Parents and kids

• Tina Fey and Anna Kendrick
• Laura San Giacomo and Kate Micucci
• Reed Diamond and Warren Cole
• Brian d'Arcy James and Ben Lawson
• David Keith and Brad Beyer
• Jeff Garlin and Ben Savage
• Daran Norris and John Mulaney

Cousins

• Pej Vahdat and Bradley Cooper

Unsure

• Melissa Ponzio and Inbar Lavi
• Leah Pipes and Hayley Marie Norman
• Susan Walters and Annie Wersching (could be mother/ daughter or sisters)