Okay, I think I've fixed the issue with this patch. Did you visit the clothes shop because your chest grew, and then shrunk down to having a flat chest afterwards? If so, this should fix the issue, it was basically checking if you had a chest size greater than 0 rather than permanently opening the alleyways the second your chest size became bigger than 0. Here is the link to the patch.
Mega
If your character's chest size is currently above 0 and you still can't access the alleyway, I'll have to look at it again.