Angelina Jolie has been secretly giving mum-to-be Nicole Richie parenting advice.

The Simple Life star is expecting her first child by fiancé Joel Madden, 28, early next year.

A source close to Angelina tells Now: ‘With Nicole finally getting her life of drugs, booze and wild partying under control, Brad and Angelina have offered her a list of common-sense tips they felt would help.

'Angelina was especially concerned about the effects Nicole’s years of partying could have on the baby.

‘And knowing that Nicole has so much hanging over her, including a stressful court-ordered probation after her conviction for driving under the influence, Angelina felt she could use some help from another young mom.’

Nicole told a friend: ‘Angelina is like a surrogate mother – albeit a beautiful one who’s nearer my age. But she has so much experience as a mom. She’s my guardian angel – and so is Brad.’

See the full story in Now magazine - out now!