More than half her life on 'Mad Men'?
At the NY Times "conversation" last night, Jon Hamm observed that Kiernan has been "on the show" for longer than she hasn't. I don't think his math is exactly right, but it's close. Kiernan turned 12 last November and she likely filmed her first episode ("Ladies Room" with the infamous dry-cleaning bag incident) in late 2006 when she was 7 or about to turn that age. Pretty cool!
Both Hamm and Matt Weiner had lots of really great things to say about Kiernan's acting, her as a person, and her family. Here's a link to the video.
http://artsbeat.blogs.nytimes.com/2012/03/20/tune-in-for-a-times-talk- with-the-mad-men-cast-and-creator/