4.
Nikki Bella, her boyfriend Artem Chigvintsev, and Brie Bella:
5.
Sarah Hyland and Jordan McGraw (son of Dr. Phil, fun fact!):
6.
Jessica Alba and Zendaya:
7.
David Dobrik and Kevin Jonas:
8.
David Dobrik and Jack Black:
9.
Sarah Hyland and Wells Adams:
10.
Maia Mitchell and Sarah Hyland:
11.
Noah Centineo and Laura Marano:
12.
Tori Spelling and Jennie Garth:
13.
Jennie Garth and Emily Osment (who also twinned!):
14.
Maia Mitchell, Robert Downey Jr., and KJ Apa:
15.
Madison Beer and Lauren Jauregui:
16.
John Stamos and Candace Cameron Bure:
17.
Gregg Sulkin, Michelle Randolph, Noah Centineo, and Lauren Jauregui:
18.
And finally, Robert Downey Jr. and all these lil' Iron Men n' Women:
