It is October 13, and another edition of the No Bra Day.

True, the origin of the commemoration is unclear, but the aim is clear: to raise awareness about breast cancer in the Breast Cancer Awareness month, October.

The message is simple: Let everyone know the importance of breast cancer screening, the symptoms of breast cancer and how to carry out regular self-examinations in the fight against breast cancer.

On October 13, women are encouraged to leave their bras at home.

Here is how campaigners celebrated the event on social media

Just free the nipples and let them be free for just a day. The world celebrates No bra day#NoBraDay #nobraday2017 #BreastCancerAwareness pic.twitter.com/GETYRi85NC

— Smaila Ansah (@mylo_melo) October 13, 2017

I would have been bad if I didn’t have a say. Get your breasts checked sisters and brothers. #nobraday2017 pic.twitter.com/gmxH6V8qrE

— Ella (@ImmaNnuela) October 13, 2017

We hope you win the fight against cancer. #fuckcancer #nobraday2017 #BreastCancerAwareness pic.twitter.com/qdgLl8vQud

— wunmielicious (@yoruba_witch) October 13, 2017

My heart goes to every mothers, daughters, aunt and sisters fighting cancer ♋ You will pull through in Jesus name. ? #NoBraDay #nobraday2017

— Phenomenal Adedayo (@dayus4heaven) October 13, 2017

#NoBraDay Is all about Breast Cancer awareness… but since you want to see breast here's one. #nobraday2017. #FridayThe13th pic.twitter.com/kNMIVLOxhy

— JES (@Last_Ranebow) October 13, 2017

Breast cancer is the most common cancer in women worldwide and represents 25% of all cancers in women #nobraday2017 #abbeysnight #nurse pic.twitter.com/sWyTIAsVuN

— NURSESGOTTALENT (@nursesgotalent) October 13, 2017

#NoBraDay2017
Early detection is key.
Breast cancer is real.
Endeavor to do a breast examination regularly.
We empathize with BC patients. pic.twitter.com/aLpBtx66WM

— Young Pharmacists NG (@YPGNG) October 13, 2017

It's big pink day .Its not about remove bras but about getting screened #NoBraDay #nobraday2017. @CancerAwareNG @Sebeccly pic.twitter.com/UJFYpRVjmW

— Med-Q Health Mag (@MedQHealthMag) October 13, 2017

LET YOUR RT GET YOU A REWARD IN HEAVEN

SAVE A FEMALE FROM BREAST CANCER TODAY

SAVE A NATION.

GET INFORMED!
IT IS DEADLY!#NoBraDay2017 pic.twitter.com/mMqNgjb3Rz

— Iké Dubaku (@UndCoverBrother) October 13, 2017

BREAST CANCER IS REAL:
SAVE YOURSELF FROM IT!
SAVE YOUR WIFE FROM IT!
SAVE YOUR MUM FROM IT!
SAVE YOUR DAUGHTER FROM IT!

RT#NoBraDay2017 pic.twitter.com/cSlTj3Z9uq

— Iké Dubaku (@UndCoverBrother) October 13, 2017