March is National Colon Cancer Awareness Month and on Friday you need to dress in blue!

National Dress in Blue Day is celebrated each year on the first Friday in March and this year it's the tenth annual.

The Kentucky Cancer Program wants you to share your "Dress in Blue Day" photos! Here are the official rules and entry form.

And don't worry if you miss Friday, you can dress in blue anytime in the month of March.

Colon cancer is the third most common cancer in the United States and the second leading cause of cancer death; through screening, it is one of the most preventable diseases.