National Big Wig Day is observed worldwide on the last Friday of January. It was initiated by Patty Sharkey on January 2, 2016, as a lighthearted response to post-holiday blues, when she donned a whimsical wig and shared a selfie on social media. The day has evolved into a charitable initiative aimed at supporting individuals who may need wigs due to cancer treatment or other conditions causing hair loss, partnering with the American Cancer Society's Look Good Feel Better program. Participants are encouraged to donate to cancer charities, volunteer in cancer wards, or simply wear fun wigs and share their photos online with the hashtags #NationalBigWigDay and #BigWigDay. Additionally, the day honors influential figures through the nomination of a "Big Wig of the Year," celebrating those who make a positive impact in their communities. National Big Wig Day combines silliness with a serious cause, promoting community support and fundraising efforts for cancer patients.