Authentic vintage sewing patterns: This is a fabulous original dress making pattern, not a copy. Because the sewing patterns are vintage and pre owned, we check each vintage sewing pattern for completeness, for the pattern pieces and the instruction sheet. Please keep in mind these are vintage patterns that may show their age not perfect in appearance but still very usable. In many cases the vintage patterns have never been used and are uncut and factory folded.
Pattern by Simplicity
Pattern Number # 2277
Copyright 1940s
The pattern is: Complete
Size: 12   Bust:   30  Hip: 33

Simplicity 2277; ©1948; Misses' and Women's Blouse: The front-buttoning blouse is styled with a yoke which releases soft gathers in front and back. A convertible collar is featured. The sleeves may be short, or long and gathered to a wristband which turns back to form a link-buttoned cuff. In Style I, outside tucks run parallel to the button closing. Style II is finished with a patch pocket.

Love the design, but not the size? These sites will help you with resizing :

http://www.sovintagepatterns.com/Pattern-Grading-Instructions_b_13.html
http://sensibility.com/blog/tips/how-to-resize-a-pattern/