Churchmouse pattern (found on Ravelry) and a very soft yarn - Sublime Yarns Baby Cashmere Merino Silk DK with a #5 circular needle. It took less than 1 ball of yarn - it was MOST of a ball - leftover from a lace shrug.
I was going to say a bunch of other stuff in this post - but the internet has been giving me fits for several days and I forget! And we just got a letter they are raising the rates for internet. HAH! If only we could live without it.....NOT.