I like this name on boys and girls. It’s really cute! Although I do prefer it as a nickname for Olivia and Oliver it’s still cool. Some name combos for Ollie: Ollie Moon Ollie blue Ollie Valentina Ollie June Ollie Jane Ollie jaye.
Never a fullname-- forever the ranks of a nickname. Having said that, it truly does seem more masculine ("Oliver") than feminine ("Olivia"/"Olive"). But it is not a diminutive that I see myself ever putting to use. "Ollie"... there is something about the spoken sound that is horribly off, in my ears and eyes. It also appears to be more of a "husband/wife" nickname, not a child's. Meaning, a wife calling her husband "Ollie."