Alicia Silverstone has posted a video of herself feeding her baby mouth to mouth.

The 35-year-old actress gave birth to baby Bear Blu 10 months ago and is delighted he is now going onto solid food.

But the actress has chosen an unconventional way to feed him and seems to have been inspired by the way birds feed their young.

The Clueless star is seen taking a mouthful of food and chewing it up before placing her mouth over her baby's and feeding him the softened morsels.

Bear Blu is seen reaching to his mother's mouth to get fed and appears to be comfortable with getting his meal that way.

"I just had a delicious breakfast of miso soup, collards and radish steamed and drizzled with flax oil," Alicia wrote on her blog.

"Cast iron mochi with nori wrapped outside, and some grated daikon. Yum!

"I fed Bear the mochi and a tiny bit of veggies from the soup from my mouth to his. It's his favourite and mine.

"He literally crawls across the room to attack my mouth if I'm eating. This video was taken about a month or 2 ago when he was a bit wobbly. Now he is grabbing my mouth to get the food!"

Alicia is a staunch vegan and is bringing up her son that way too. She is married to singer and radio presenter Christopher Jarecki. They met in 1997 and tied the knot eight years later.