Adding piping to your seams can add such a special touch. It's totally worth the extra bit of work as it can make your seams more prominent and beautiful.
Piping comes in lots of different colors and is generealy covered in a basic cotton fabric but it looks extra fancy when you create piping covered with self fabric. Whether your pattern calls for it or not, you can add piping to seams if you want to spruce up the design a little. Here's a little tutorial to show you how to cover store bought piping with self fabric.
I used it here in the Simone dress because I wanted to add prominence to the seamlines of the front placket. I broke up the monotony of the blue fabric by added a running stitch in anchor threads to match the piping in order to integrate the colours.