The phrase "casual day" refers to a day when people can dress in a relaxed and comfortable manner, instead of wearing formal or professional attire. Full definition
This look is perfect for casual day out, I obviously had to team it with a pair of nude asymmetrical pumps and there was minimal or no accessory. (mymagicaltrunk.com)
I can see myself wearing this outfit a lot throughout the spring for casual days out. (katelouiseblogs.com)
I wore this exact outfit on casual day at work, so I figured, why not also share it here. (thebeautybeau.com)