It appears there will be a costume from Yuna that Lightning will appear in Lightning Returns: Final Fantasy XIII.
A video of Lightning Returns: Final Fantasy XIII has been uploaded online that shows Lighting wearing Yuna’s costume from Final Fantasy X-2. You can see the costume from the video at the 3:37 mark.
It’s likely the costume will be announced as DLC in the future. Lightning Returns: Final Fantasy XIII will be out February 11th in North America and February 14th in Europe for the PS3 and Xbox 360.
Check out the video below: