For my test knit I used a 2ply fingering weight yarn instead of a sport weight, and got gauge with a US5 needle. Those are the only modifications made to the pattern for me. I also knit a size up from my bust. My bust is around 53” and I knit the 57”(or size 11) tank. This pattern would easily be modified to be longer! I think this pattern is very well written and creates such a beautiful garment.