Going on a date tomorrow night. Any advice to lessen the anxiety?

Going on a date tomorrow night. Any advice to lessen the anxiety? Met this really cute girl online the other day and our chemistry over text chat is really fun and lighthearted. We're going out tomorrow night for a few drinks (alcohol generally helps) and dinner but I'm still feeling nervous as fuck that once she hears me speak it won't be the same kind of vibe. I know I'm probably really overthinking it but my stutter can get quite bad especially my blocks and it doesn't help that I'm not the most confident person around women. Should I tell her beforehand? What have you guys in similar situations done to ease your worries?