What to do with friends who don’t update you on the agreed outfit to wear to a party ?

In the weekend I went out with my friends to a party. Halfway through my rum I notice every invited guest was wearing a white top and blue bottoms except me.(Back where I live there are three friends who were invited and we are so close that we had to chill in one of their cribs waiting for the party decorations. We were together for like 3 hours before the party commenced) So I turn to one of the friends and say “ Seems like these people had agreed to wear white and blue” he says. “Yes, can’t you see I am also wearing white and blue?” That’s when I realize the white top I was wearing was just but a coincidence