Gwen Stefani is surprised by how successful her fashion line has become

The stylish No Doubt singer - who first launched her collection L.A.M.B seven years ago - is thrilled with the pieces in the newest range, which she has spent months creating.

She explained: "I never thought it would turn out this good.

"I'm really spoiled. These jeans are as good as anything I have."

The 39-year-old star's new collection focuses on attention to detail, and mixes neutral tones with electric shades of purple, red and yellow.

The new line - launched in collaboration with Manhattan International Inc - will be priced between $48 and $345 and includes a large selection of feminine separates, tailored jackets, skinny jeans and animal prints.

Gwen admits juggling the label, her singing career and being a mother to her two young sons, Kingston, three and one-year-old Zuma with husband Gavin Rossdale, is challenging.

She added: "I don't get any sleep."