Rachel Brosnahan's Fake Internet Birthday Fooled Benedict Cumberbatch

Rachel Brosnahan explains how she wound up with two completely fake birthdays on the internet, teases what's to come in Season 3 of The Marvelous Mrs. Maisel and shares what it was like going through JFK airport security in full costume.

Subscribe NOW to The Tonight Show Starring Jimmy Fallon: http://bit.ly/1nwT1aN

Watch The Tonight Show Starring Jimmy Fallon Weeknights 11:35/10:35c

Get more The Tonight Show Starring Jimmy Fallon: https://www.nbc.com/the-tonight-show

JIMMY FALLON ON SOCIAL
Follow Jimmy:   / jimmyfallon  
Like Jimmy:   / jimmyfallon  
Follow Jimmy:   / jimmyfallon  

THE TONIGHT SHOW ON SOCIAL
Follow The Tonight Show:   / fallontonight  
Like The Tonight Show:   / fallontonight  
Follow The Tonight Show:   / fallontonight  
Tonight Show Tumblr:   / fallontonight  

The Tonight Show Starring Jimmy Fallon features hilarious highlights from the show, including comedy sketches, music parodies, celebrity interviews, ridiculous games, and, of course, Jimmy's Thank You Notes and hashtags! You'll also find behind the scenes videos and other great web exclusives.

GET MORE NBC
NBC YouTube: http://bit.ly/1dM1qBH
Like NBC:   / nbc  
Follow NBC:   / nbc  
NBC Instagram:   / nbc  
NBC Tumblr:   / nbctv  

Rachel Brosnahan's Fake Internet Birthday Fooled Benedict Cumberbatch
   / fallontonight  

#FallonTonight
#RachelBrosnahan
#JimmyFallon