Fred Astaire in You'll Never Get Rich, 1941 (from Wikipedia)
Thank you FillW for an interesting link about button hole flowers and boutonnieres. But my primary question remains. How can I fasten a carnation as Fred Astaire did, pointing forward. Anyone that knows - or is it a forgotten knowledge?
Here's a link about the subject:
A florist (or you, if you're so inclined) can wrap wire around the stem of the flower, then the florist's tape, and bend it into the L shape necessary to make the flower face out.