Fergie is a huge fan of Jessica Alba's organic company.

The Black Eyed Peas singer, who has a seven-month-old son Axl Jack with her husband Josh Duhamel, regularly buys baby products from the 'Fantastic Four' star's eco-friendly brand, The Honest Company, because they don't contain any toxic materials.

The 38-year-old star told People.com that she now has ''a whole bag'' of must-haves from her friend's line, and said: ''I feel like [she's] done a great job with that company.''

Fergie added: ''She sent me some [diapers] when he was born and I wrote her a thank you. But I've ordered more since she sent them to me because they're great. I love her moisturising cream as well.''

The 'Pump It' hitmaker is very proud that her little boy is currently learning to sit up by himself but admits he has also developed a soft spot for her famous blonde locks.

She said: ''He likes to grab on to everything -- including my hair, which I completely encouraged in the beginning. I loved when he touched it, he got so happy. I felt this bond with him as a mommy. I think that a lot of feelings that you have as a mom, they're so pure and loving. But I asked for it, so now he grabs it all the time!''