I have a job interview—the most important one of my life—and I stammer. Should I bring it up?

I have a job interview—the most important one of my life—and I stammer. Should I bring it up? I have a huge job interview coming up—probably the most important one of my life. I stammer, especially under pressure. Should I mention it briefly at the start, just to clear the air? Or is it better to just go with the flow and not bring it up unless needed? And any tips to stay calm at interview will be really helpful Would love to hear from anyone who’s been in a similar situation.