Cookie sent this pattern — which is actually a lovely dress, from So Vintage patterns — for us all to make fun of the picture.
Oh, it's so easy, isn't it? What is her arm resting on? Is the other woman painted on the wall, and Foreground Woman is leaning against the wall? Does Background Woman have an unfortunate and conveniently placed bone spur coming out of her thigh? Or (my favorite hypothesis) was there an invisible mantelpiece, made by some ancient 1960s technology, now lost? Is Background Woman about to say something tactless, or reveal a secret (look at her, on the verge of speech) and Foreground Woman is elbowing her to shut up already? Were they pushing and shoving to see who, in fact, would get to be Foreground Woman?
Foreground Woman could also be a space alien: look at her head and tell me that's not a wig covering up her enlarged brain inside a transparent domed skull.
Too bad the envelope image is so WTF-y; I really like the dress! (But you know I'm a sucker for those single-button bodices. And for transparent domed skulls, when you come right down to it.)
[Cookie, by the way, is also looking for Butterick 2241, a 1960s shirtdress. If you know where one is, want to let me know, or post a link in the comments?]