So in regards to the Liv accessories and shoes- the accessories seem to fit them pretty well (I just haven’t gotten around to a photo shoot yet).
The “bowling” shoes (came with a ball, bag, pizza & soda can) fit after some stretching, and the little flats that came with the baking set, don’t quite. The sandals don’t seem like they wouldn’t fit at ALL and the slipper may fit Howleen (haven’t tried them yet).
As I mentioned, the last couple times I’ve seen them at a TRU they were only a buck- I think its worth it for the little extras, personally :)