Knightskykyte asked me to consider doing a default replacement for the girls' formal dresses from the base game, using her girls' formal dresses, and here's what came out. I used the green and aqua outfits from her lace-top set, and three of the four outfits from her velvet-skirt set. The mesh is by Kate at Parsimonious, and is included as a separate download. Like the Maxis originals, these outfits are Formal only. Based on KSK's close-up pictures of the shoes, I set the shoe sounds to normal.

You can only have one replacement for any given outfit, so you should remove any other defaults for cfbodydressformal before installing this one.

Additional Credits:
Kate at Parsimonius, for the replacement mesh.
Knightskykyte, for the replacement textures.