Because series creator Matthew Weiner wanted everything on AMC’s 1960s drama to be as authentic as possible, Dudek — who played Betty’s neighbor galpal Francine — and the rest of the cast members wore era-specific undergarments. We’ll let her tell it.

“The bras… we ultimately stuffed those with tissue, and I have to tell you, I don’t know how those women did that. Because to have tissue balled up in your bra all day isn’t very comfortable. Everyone has these pointy boobs, right?… I remember at the end of the day taking this rough tissue out of my bra and just feeling totally relieved.”

http://tvline.com/gallery/memories-from-the-set-anne-dudek/#!8/anne-dudek-mad-men/