Nicole Richie is set to extend her portfolio of money-making ventures - she is launching her own jewellery line.

The reality TV socialite is designing pieces which will be produced by Mouawad - the exclusive jewellers behind supermodel Heidi Klum's fine jewellery collection.

And the new mom is ecstatic with the way the production process is going, because she can fit in time for designing as she looks after her newborn daughter Harlow Winter.

She says, "It's all costume jewellery. I like to play with jewellery and mix and match. (I'm working with) this really talented woman named Shelley Gibbs. She's an artist and she sketches everything."

"Everyone's been really mellow and able to work around my schedule. If I need to go feed the baby, I do it."

As well as the jewellery project, Richie, who already has author, actress and singer on her resume, is launching a children's clothes range in addition to rumors of plans for her own fragrance, reports People.com.