Apparently, it's "dress-down Fridays" not "dress none Fridays".

Dress up or dress down?

Dress up or dress down?

Dress down dat at the office

starBibi Fox is a fully clothed bombshell who loves to dress

Dress Down.

Dress Down Friday in Black... (F)46

I'll dress up, then dress down for you

Dress down day at work NEVER disappoints…

I'm not just a dress, I'm a way to dress up or dress down. [BTBF]

Dress up or dress down? You decide.

Dress down and up