L.A.M.B.

Stefani's first experience designing clothes came when she and her mother would sew clothes for themselves when she was young. Stefani comes from a long line of seamstresses, as even her great-grandmother would sew clothes. Stefani made most of the things she wore onstage during concerts. When she became successful and began to tour constantly, she felt she lost her way. Then she met the stylist Andrea Lieberman. Lieberman introduced her to ready-to-wear clothing. Later Lieberman became her creative consultant and Zaldy Goco took over as the head designer. Goco parted ways with L.A.M.B. in 2007.

L.A.M.B. started out as a collaboration with LeSportsac in 2003. The name L.A.M.B. is an acronym which stands for Love. Angel. Music. Baby., which is also the name of Stefani's first solo album.

L.A.M.B joined with Royal Elastics for the shoe line. Stefani then started to widen the footwear line for adults to include boots and stilettos. L.A.M.B collaborated with Coty Inc. for the fragrance and with LeSportsac for handbags in 2003. The fragrance, "L" was launched in September 2007 at Soho House in New York City. Stefani worked with perfumer Harry Fremont to develop the scent. Stefani described the fragrance as "it's another thing you can wear and another thing I can be part of creatively. I created it for myself -- it's like me shrunk into a box." Stefani went on to design a new line of handbags with Shifter and Partners in 2006. The bags feature LeSportsac's rip-stop nylon along with a variety of antiqued metal hardware, leather trims and colorful linings. Stefani planned to design lingerie as well as make-up products for L.A.M.B. L.A.M.B. partnered with Vestal Group on a line of 39 women's watches.

L.A.M.B. products were relatively expensive, with apparel priced $55 to $1100, handbags priced $80 to $825, and watches priced $125 to $995.

An eyewear collection launched in January 2016. It won 3 of 20/20 - Vision Monday Reader's Choice awards: Frame Brand Introduced 2016, Sunglass Brand Introduced 2016 & Frame Brand – Women.