Fox has eight known tattoos, including her ex-fiancé's name "Brian" on her lower hip and a picture of Marilyn Monroe's face on her right forearm. Fox also has another tattoo on her right shoulder that reads, "We will all laugh at gilded butterflies" a line adapted from William Shakespeare's play King Lear, a yin and yang tattoo on her left inner wrist, a poem on the left side of her rib cage that reads "there once was a little girl who never knew love until a boy broke her HEART," and a Chinese word for "strength" on her neck. Fox also has a crescent moon overlapping a five pointed star on the inner aspect of her lower leg above her right ankle. This tattoo is the only known colored tattoo that Fox has.
Fox said she has a Marilyn Monroe tattoo because, "she was one of the first people I saw on television, like, literally moments after I was born. Every time I heard her voice growing up I always would cry. I wouldn't know why when I was younger but had my own theories" and that Fox has always "empathized" with her. Fox had shown interest in getting her yin/yang tattoo removed remarking that the tattoo artist "didn't do it correctly" because he was under the influence of marijuana; however, Fox still has that tattoo as of August 2009. Fox has said of her tattoos that when she gets a tattoo, "It's a little 'fuck you' to anyone who tells me not to."