It's the ubiquitous February Lady Sweater in Dream in Color Classy. A big splurge, but worth it.
(Excuse the poor photobooth picture, but it's better than nothing, no?)
I made very few modifications to the pattern as written. I did decrease away one of the pattern repeats under each arm, because I thought the arms would be too floppy. I toyed with doing a bit of waist shaping, but that seemed too daunting in a lace pattern.
It still needs buttons, as you can see, but I'm wearing it today anyway!