But, assuming the patterns in question are for babies of post-newborn size, like the BSJs, maybe I could go ahead and knit up the Malabrigo on US2 and wind up with a sweater and leggings for a newborn. So I did just that.
The pattern for the leggings was easy to translate, as everything was in number of rounds. The sweater, however, was described in inches. This was a bit of a conundrum until I decided to go ahead and knit up a sweater in DK (this is Schaefer Lola) at the desired gauge (on US6) and count the rounds per inch and apply them to fingering.
This worked out pretty well, except I ran out of yarn. Initially, I thought I could just shorten the sleeves, but now I want to find a comparable yarn in a contrasting color for the sleeve cuffs and bottom band and make the sizing "correct". I was able to determine that two gull pattern repeats equals an inch on this sweater, so I could apply that knowledge to the newborn size.
The experiment would not be complete without also making a set out of sport weight. Toward that end, I purchased the following from Wandering Cat:
This grandbaby will not be dressed in pinks and pastels alone!