Here's what I used...
You could probably use the pro white as a base coat, but out of habit I also applied Sally Hansen's nail thickener. OPIs I Don't Give a Rotterdam is quite a sheer colour, so I thought I'd apply a white base coat first. This makes the colour look a lot more opaque & the glitter in the polish becomes more obvious. I used Barry M's matt white.
Love love love OPI! All of their colours I've tried are so so pretty & they apply like a dream.
What are your favourite OPI shades?