I found this display on Target. A black and white polka dot ribbon tied around the case is all it would take to turn this vase into a perfect centerpiece. You could also place small votive holders with black and white votives around it for a romantic candle lite dinner.

These are lovely, and are $29.99 each. You can find them on the target website.

If they are a little expensive for your tastes, you may be able to get the look for less. Glass vases can be rented from your wedding rental provider for a few dollars. Silk pink florals can be purchased at the craft store along with some polka dot ribbon. If you are not a fan of ribbons – black and white stones in the vase would also make a beautiful touch.