Mad Men: Peggy Dress

Hello Sew Retro crafters! It's Christine from What's Up Cupcake?  I'm looking for your assistance in tracking down a dress design.  Any help with a recommended pattern, new or vintage that I can track down will be so helpful! Hopefully then I can post a completed project post about it.

While playing catchup with Mad Men episodes on our Tivo, I was instantly enamored by Peggy Olson's dress in episode 11.  I want to add this to my 'to sew' list but I need to begin a hunt for a similar pattern.

I love the blue/red combo, especially with the red peeking out in the skirt.  The two little buttons on the front are a fun accent.

Anyone have any pattern recommendations?  Thanks for your help!