The surrogate mother carrying Sarah Jessica Parker and Matthew Broderick's twin girls has been identified as former barmaid Michelle Ross - a 26-year-old who refers to her "pink hair, tattoos and spiked collars" on her Myspace profile page.
According to US reports it is not the first time divorcee Michelle has stepped in to carry a child for want-to-be parents. She's also served as a surrogate mum for a gay couple in New York.
"(Michelle) wanted to become a surrogate to help people who couldn’t have children of their own," her former husband Joseph Erker tells America's Star magazine.
Meanwhile Sarah and Matthew – who are already parents to six-year-old James Wilkie – are busy preparing for the arrival of their baby girls, due in July.
Speaking about the pressures of balancing her career with three children, 44-year-old Sarah said: "Any complications or any anxiety I feel is normal. Any mother who wants to continue to work and have a career outside the home goes through this, so I feel very much a part of the sisterhood."