She suffered self-doubt for many years of her career as a model, also marked by the loss of her best friend in the Marchioness disaster and by the death of her mother from ovarian cancer in 1992. While she was modelling, in 1993 Aldridge became pregnant with her first child, Milo, by her partner Simon Astaire. A year later she married media executive Toby Constantine and gave birth to her second son, Finn Constantine in 1997 but the marriage eventually led to divorce. In 2012, she married the financier Ian Wace.