There's always Samus Aran, whose breasts can be found in nearly any size with a google search.
And thank the Powers that Be for That.
Modern and game-based, Samus escapes those vintage limits.
Ya know, though, not too long after that vintage space girl period came Vargas, who while leveraging vintage styles, extended later in his career with some (then) serious breast size.
And phenomenally detailed art.
-D'Artagnian
Hef's influence.
Wonder if Vargas ever did a space girl? Well, ya figure, he was prolific for so long he must have done one, probably a few.