Can you wear what ever you want to a wedding.

The reason I ask is because my mom went to a wedding today. It was a church wedding. My mom called me right after the wedding to complain about how one of my cousins was dressed. She wore leggings and a tank top. My mom is all upset over it. I was happy I didn't have to go. So is my mom over reacting. I see her point but it is hard for me to see how this is the end of the world.