SYLVI requires anywhere from 1,632-1,904 yards, depending on the size, using Briggs & Little Atlantic as the original yarn. Yardage is yardage, but maybe there could be a variance if we're using a substitute bulky weight yarn.
Sizes are 34; 38; 41.5; 44.5; 47
Skeins: 12; 12; 13; 13; 14
Yards per skein on Briggs&Little Atlantic: 136 yds each
I read that this coats grows a bit, and it kinda stretchy...so if you are a bust of 42 or 43...the 41.5 will prolly work rather than the 44.5". Unless you like a real roomy coat.
Just something I read. That is not in the official pattern.