Because, really, the sizing appears to be nigh on random, especially between pattern makers. You just get to grips with Butterick and then a New Look pattern throws you completely by being different altogether.
It’s just not cricket. Or even Lacrosse.
For a three year old girl, Butterick think 56cm chest and 51cm waist
and McCalls are going for 56cm/52cm
New Look, on the other hand, assure me a 3 year old will have a 55cm chest and a 53cm waist.
… but I just don’t trust them because one glimpse at my older patterns tells me that Simplicity used to say it was 53cm chest and 51 waist…
So their measurements totally depend on how old the patterns are – great for those of us that source retro patterns!
So, to recap – from 51-53cm waist, from 53-56cm chest…
… and that’s before any variations due to sewing.
Excellent. They sure know how to make life easy.
And of course I am not even going to start thinking about the children on the 5th or 15th or 80th 95th percentile of the growth charts, for whom none of this means a darned tootin’ thing anyway, because if I do I’ll … I’ll… oh too late… Goodbye cruel world of sewing patterns – I am off to put my head in the overlocker now.