A Dress to Match a Necklace

So, I wore this necklace last weekend with an adorable gray dress.

And it struck me after looking at the photos that I had been seeing that pink color all over the place with bright navy colors. So, now I am on the hunt for the perfect navy dress to match the necklace.

Here's one I like a lot so far from VS:


Now I'm wondering if I'm nuts for wanting to buy a dress to match an accessory. Seems backwards a bit...no?