It it normal to play with dolls at 19?

It's a very weird and hard subject for me to talk about. I recently just got into these figures called Funko Pops (I even got my grandmother into them). And I fell in love with them. Recently while on youtube I saw some collectors collecting and "playing" with Monster High dolls. I do sometimes find myself looking at them when I'm out and about. I'll tell my family I want to go look at something and secretly go to that section of the store. I would love to collect some... My mother is weird about things like this. She never liked that I spent my free days playing video games and she can be sorta judgemental. She is perfectly fine with me playing video games now. Simulation games just don't do it for me anymore. Years ago I would go over my friends and she had dolls galore and soooo many accessories. I was always jealous. Well.. I don't really have a life at the moment. I hang out with friends here or there, I'm in college, and currently looking for a job. I have a lot of free time and I get bored easily and I believe this will help pass the time... Okay, okay. I want to PLAY with them. Not in an obsession kind of way at all, just when I get bored some days. Is this weird? Should I just fight the urge? I'm worried how my mom would judge me... And if she told others... This would be kept secret between her, my grandmother, and myself. Even though I see many people on youtube over the age of 20. Yeah, 20! Is this still weird to people? Or is it a normal thing? If it's normal.. How should I tell my mother I want to collect these dolls?