This Buffy vs Faith fan art contains
cocktail dress and sheath.
There might also be
dinner dress, dinner gown, formal, evening gown, chemise, shimmy, shift, slip, teddy, and garment.
This is a really great video made by Ashlylimafan that contrasts Buffy with Faith. It's set to a DJs mix of Boulevard of Broken Dreams by Greenday and Wonderwall by Oasis. I think that there's some Travis in there too, just not sure which song.