VistaPrint business card editor - Font size selector
A drop-down font size selector menu provides more option than you are likely to ever use. A certain caution should be remembered when thinking about using typeface sized smaller than, say, 10 points. The actual printed business card is smaller than what you see on-screen. There is a risk that a too-small typeface will be unreadable on the finished business card.
Next - Font typeface selector list