what to wear for the sister of groom

Lung Cancer Awareness month Day 2
The awareness ribbon for lung cancer is white because most of the time symptoms of lung cancer go unnoticed.

My dad has what he called a sinus infection for almost three months. He went to multiple urgent cares and his physicians NP. They all just gave him antibiotics and steroids. His primary care physician even thought he just had a bad sinus infection in February when the went to him. what to wear for the sister of groom