Kate Moss is the Sphinx by Marc Quinn at the Mary Boone Gallery in NYC. When Kate gets pregnant with Pete Doherty's baby the artist can make a whole new series.

Meanwhile Kate Moss wants a baby with fiancé Pete Doherty, it has been reported.

The supermodel, who launched her Topshop fashion line this week, is said to be desperate to start a family with the Babyshambles frontman.

According to Britain's Daily Express newspaper, Kate told a friend:"Everyone is obsessing about a marriage and where we are with that. None of that counts because we are together. What counts is having a family and we need the bond of a child. Pete would make a fun dad."

Kate, 33 - who has a four-year-old daughter Lila Grace from a previous relationship - is allegedly convinced having a child with Pete, 28, will cement their love.

She apparently said: "We've got our music together and we're writing an album but a baby would be the clincher between Pete and me. Lila deserves a sister."

Pete, who has entered rehab for drug addiction several times, already has a three-year-old son Astile by his ex-lover Lisa Moorish.

It is reported he has limited access to his son because of his drug use. Last year, Moorish - who also has a daughter, Molly, with Oasis singer Liam Gallagher - is said to have told Pete to clean up his act or risk not seeing Astile over Christmas.

Kate insists Pete is "wonderful" with Astile and believes having a child with him will help the rocker kick his drugs habit for good.