Am I the Asshole for Kicking Out My Bridesmaids?

My 23 female wedding was back on Saturday, December 31st. I have this friend that I asked to be one of my bridesmaids. She showed up 30 minutes late holding a bag that looked like it had a dress inside. Cat is the last person to come down and she's wearing a black dress. The bride kicked her out for showing up in the wrong dress. Am I the asshole for kicking her out? No. Ever since the wedding, cat has been blowing up my phone with text saying some really nasty things.