Dakota and Elle Fanning
Credit: INFevents.com
Zooey and Emily Deschanel
Credit: Carlos Diaz/INFevents.com
Chris and Liam Hemsworth
Credit: Tina Kaawaloa/INFevents.com
Mary Kate and Ashley Olsen
Credit: ACE/INFphoto.com
Rosanna & Patricia Arquette
Tia and Tamara Mowry
Credit: Pena/Hall/INFphoto.com
Credit: Jennifer Graylock/INFphoto.com
Derek and Juliann Hough
Credit: Dara Kushner/INFphoto.com
Hilary and Haylie Duff
Carnie and Wendy Wilson
Credit: Roger Wong/INFphoto.com
Donnie and Marie Osmond