At a recent PaleyFest event the cast of Masters of Sex spoke about working on the show, and went into much detail about their period undergarments.

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The women members of the cast joked about going back in time and donning girdles and whatnot.

"I insist on wearing the period appropriate undergarments, as a way to get into character," Lizzy Caplan said.

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Michael Sheen, who was in a rather humurous mood throught the event, chimed in at this point: "So do I. I actually insist on wearing Lizzy's."

The wisecracks didn't quite end there as Annaleigh Ashford, who plays Betty, a prostitute, on the show, went on about the importance of sticking to the right kind of underwear.

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 "Undergarments can change everything about how you walk, how you talk, how you move," Ashford said. "So thank God we wear full-out undergarments from the era. But also it was very hard to pee back then. You have to ask somebody to help you when it's time to go pee. I mean - I haven't done that since I was like 4."

Caplan also went onto cite an instance when Betsy Brandt (Breaking Bad) who has joined the cast for season 2 asked her about overcoming the obstructive nature of the garment when one needed to pee. What followed was a hilarious exchange between the ladies on the panel about how Caplan had it all figured out and them asking her what her trick was.

Season 2 of Masters of Sex returns to Showtime on July 13.

Watch the promo for season 1:

Tags: Masters of Sex Season 2