I see it as dated. I know SO many [name]Allie[/name]'s, all in their teens and twenties. It just screams 1980’s/1990’s to me.
I know quite a few [name]Allie[/name]'s (some are spelled [name]Aly[/name] or [name]Alli[/name] or [name]Ali[/name], etc) under the age of 10. They are nicknames for [name]Alexandra[/name], [name]Allison[/name], [name]Alexa[/name] (the mom said she just never seemed like an [name]Alexa[/name] even though that was their favorite name and she seemed more like a sweet and innocent [name]Ali[/name]). For me, I dont think [name]Allie[/name] is dated but I may be biased because my [name]Alexandra[/name] goes by [name]Allie[/name].