Changing Size of Multiple Datepickers on one page

I have a page that has a inline Datepicker and a Icon Trigger Datepicker. I want the inline one to be a certain size, and the Icon Trigger to be another size. The Icon Trigger comes first in page execution.

I can change the size for both of them using the CSS class .ui-datepicker, but how do I apply specific styles to individual datepickers? Any ideas?

Thank you for your time.