November 19, 2014 - 14:40 GMT hellomagazine.com Tallulah Willis has shocked fans as she shaved her head in a video she shared on Instagram. Tallulah Willis has opted for the ultimate drastic hair change: shaving her head. The Californian beauty shared photos of her new look on Instagram, looking virtually unrecognisable. Older sister Rumer revealed that Tallulah took the dramatic style one step further, having shaved her head herself. Rumer shared a video on Instagram of the 20-year-old laughing and joking as she takes the electric razor to her head and shaves off her pixie cut. @buuski is a bad ass bitch #GIjane #rawbeauty Un vídeo publicado por Rumer Willis (@ruelarue) el Nov 11, 2014 at 1:35 PST Tallulah's new look to the girls' mother Demi Moore, who famously shaved her head as she starred in 1997 hit movie G.I Jane. The pretty actress referenced the film as she captioned the video of her sister with hashtags including #GIJane and #rawbeauty. Tallulah took inspiration from mother Demi Moore for her new look The 26-year-old was clearly in awe of her sister's striking new look, sharing a polaroid photo of Tallulah looking virtually unrecognisable in the edgy new style. "My beautiful sister @buuski," she captioned the photo. "Perfection down to the bone and beyond #rawbeauty." Tallulah also proudly revealed that her mother as inspiration for the effortlessly cool style, sharing a photo on her own Instagram account of Demi as G.I Jane. "Mawms is bae. #thankgodgoodheadshapesruninthefamily," she quipped alongside the picture.