Shannen Doherty took a walk down memory lane on Monday when she uploaded a very personal video of the day she shaved her head on Instagram. In the clip, Shannen is shown laughing as her friend Anne Kortright-Shilstat shaves her hair with electric clippers. "This day..... laughing thru the tears. Thank you @annemkortright for jumping in and doing what needed to be done. @themamarosa," she wrote. Shannen has been incredibly open about her cancer journey, and earlier this month, she attended the Animal Hope and Wellness Foundation's Gratitude Gala in LA just one week after finishing chemo.