National Dress in Blue Day is held in March to raise awareness about colorectal cancer. On this day, people are encouraged to wear blue as a simple yet powerful way to show National Dress in Blue Day is Friday, March 4th American Cancer Society National Colorectal Cancer Roundtable JENNIE: Wear Blue Day and other events to raise awareness about colorectal cancer WJBF Anne Hathaway's Weight Loss: How She Shed 25 Lbs for the Role of Fantine in Les Misrables PINKVILLA: Health I didn't know how to appreciate them!' Anne Hathaway felt 'badly' about herself in certain outfits Home Dress In Blue Day 2021