Sam Taylor-Wood and Aaron Johnson are engaged

Sam Taylor-Wood is pregnant again by her toyboy fiancé Aaron Johnson.

The artist, 44, who's already mum to daughter Wylda Rae, 1, by the 21-year-old actor, is due to give birth early next year.

Sam defended her unlikely relationship with Aaron after they got together on the set of her directorial debut film Nowhere Boy in 2009.

'In the old days, "controversial" in a relationship meant same-sex or mixed races,' she told Harper's Bazaar.

'Now, it is a woman with a younger man. That would not happen with a man.'

Sam is also mum to daughters Angelica and Jessie with ex-husband Jay Jopling.

Aaron starred as 'super-hero' Dave Lizewski in Kick-Ass with Nicolas Cage.

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