Alicia Silverstone has launched a breast milk sharing service for vegan mothers.

The 'Cluless' actress - who has two-year-old son Bear Blu with husband Christopher Jarecki - created Kind Mama Milk Share, to help mothers who can't produce enough milk of their own for their babies.

In a post on her blog,, Alicia revealed what gave her the idea, explaining: ''A couple weeks ago, another mama I know gave birth to a son. She e-mailed to let me know how things were going, and she was beside herself. She'd tried to do everything so that this baby would have the healthiest, happiest start in life -- she nourished herself during pregnancy with clean, kind foods; had a beautiful home birth; and planned to breastfeed from now until her son could say, 'No thanks.'

''But because of a breast reduction surgery, she found she wouldn't be able to make enough milk for him, no matter how much precious boobie time they spent together. She tried reaching out in her community for donor milk, but it was almost impossible to figure out what kind of lifestyle choices the donors had made.''

Alicia also encouraged mothers who need milk or who would like to share, to get involved.

She wrote: ''A lot of women unfortunately have a similar struggle, and there's no reason why they shouldn't be able to give their babies the most amazing start in life with clean, mean, glorious breast milk. And because we are a community of beautiful souls who recognise the importance of food as health, I say we help support those mamas and babies who need a hand during one of the most important times in their lives. It's why I'm starting the Kind Mama Milk Share, a way for moms to connect with other moms in their area. If you have milk to share--post it! If you are in need of milk -- post it! Think of all the babies we can help raise together!''