I can easily drink a whole bottle of wine in a night….I’m guessing this isn’t normal?

I’m 23F and quite petite. Lately I’ve noticed I can/do finish off a bottle of wine in one night, maybe over a period of 4 hours or so. By the end of it I am drunk, but not belligerent. This is not an everyday occurrence by any means, but it feels odd that I have to drink that much wine to feel drunk. My friends all get drunk way faster than me, and are always surprised at my high tolerance. Is something wrong w me?