When it come to Julia's pink dog suit her costume value is only part of it. It's more likely to do with issue I stated on the link above.i don't get it. JUlia's costume is already 20. but isnt's trigger yet. is it bug?
So, if you have the Pink dog suit in the shop on the computer you should be able to do scenes with Julia, if not then follow the link I pointed you to. and use the instructions I list to remedy it.
and if you're still not able, send over you save and I'll see if I fix it for you.