Nicola Rachele-Beth Grahame was an English television personality and author.
She was a contestant on the seventh series of the reality show Big Brother in 2006, which she finished in fifth place. Following the show, she starred in her own reality series Princess Nikki, and won a National Television Award for Most Popular TV Contender. In 2010, Grahame was runner-up in Ultimate Big Brother, and in 2015, she appeared as a guest housemate on the sixteenth series of Big Brother. In 2016, she competed in the fourth season of Big Brother Canada, finishing in sixth place.
Grahame suffered from anorexia nervosa throughout her life. She released the books Dying to Be Thin (2009) and Fragile (2012), both of which are based on her experiences with the illness. She died from anorexia nervosa complications on 9 April 2021, aged 38.