For Bitty: Very age appropriate. Things yo would actually see on a baby. The jumper and turtleneck are nice, but I love the knit outfit. The knit is nice and soft. The shoes are pain, they are hard to get on, but as they are knit, the may loosen up. Grade: A-
For Big Girls: Knit is not appropriate, jumper and turtleneck can work, but a bit young. Shrug and cap can look a bit like a hoodie. Grade: C
In conclusion: A lot of nice pieces for Bitty, wouldn't get it for the big girls on their own, but they can share if they have a little bitty sister.
I just want to add some pictures. Here's Elizabeth wearing the cardigan and jumper, paired with the shoes from the current JLY meet outfit. I wouldn't even try to put those tiny knit shoes on a big girl -they're so tiny.