This snowflake is motif #105 from Tatted Fashion by Teiko Fujito. I love the graceful lines and echoed shapes, with a small snowflake at the tip of each arm of the full snowflake (technically the original pattern had a star of five rings at each tip - I added a sixth one to change the star to a snowflake). The pattern was illustrated as a handkerchief corner embellishment, proving that beautiful snowflakes hide in the most unusual places. I can pin it a little tighter when starching, which straightens out the long connecting picots.
Book cover shown below using an amazon affiliate link. Teiko's work is meticulously executed and gloriously colorful, and I find myself flipping through the pages just to look at the lovely pictures.