Sarah Jessica Parker

Parker and husband Matthew Broderick are expecting twin girls by surrogate mother Michelle Ross. The couple already have a six-year-old son, James Wilkie who was conceived naturally but the actress had subsequently struggled to get pregnant again. Parker has expressed concern for Ross's safety and said there had been an "extraordinary and unprecedented invasion of her [surrogate's] privacy".

Dennis Quaid

Actor Quaid and wife Kimberly (37) became parents of twins, Thomas and Zoe, born to a surrogate in November 2007. "God has blessed us," the Quaids said. The twins nearly died when they were given an accidental overdose of blood thinner but made a full recovery.

Robert De Niro

The actor became the father of two boys, Julian Hendry and Aaron Hendrick, in 1995 with his former long-term girlfriend, restaurateur and actress Toukie Smith, via a surrogate mother using IVF. De Niro and Smith's relationship had ended several years prior to the twins' birth.

Kelsey Grammer

Former Frasier star Kelsey Grammer and his wife Camille decided upon surrogacy after she was advised to avoid getting pregnant because she suffers from irritable bowel syndrome. Daughter Mason was born in 2001 and son Jude in 2004.

Ricky Martin

Twin boys, Matteo and Valentino, were born for the Puerto Rican singer in August 2008. "Ricky is elated to begin this new chapter in his life as a parent ," his spokesperson said.