Take a little from the 30s, Add some 40s, and Stir in the 50s...

Sounds like a mess, but I like the result.

I started with a McCall's pattern from 1957:

But I don't like tight sleeves, so I added these pleated sleeves from the mid 1930s:

And I used a patterned cotton fabric from the early 40s so the resulting blouse looks like this:

See more details at The Vintage Traveler.