By Erica Tempesta For Dailymail. Amber Tamblyn proudly revealed her armpit hair and dark roots while posing topless for an au naturale portrait in honor of her 37th birthday. The actress and writer, who celebrated her birthday on May 14, took to Instagram that day to post the artistic image, which shows her holding her arms over her head and closing her eyes while her long strawberry blonde hair covers her bare breasts. In this prolonged moment. This unknown. Picture me, no makeup.