Gwen Stefani can't compete with top quality designers when it comes to her own fashion range.

The No Doubt singer launched her clothing line L.A.M.B. in 2004 and although she thinks her lack of formal training means she will never be an equal to couture designers such as Vivienne Westwood or John Galliano, Gwen admitted she prefers to design casual wear.

She explained: "What qualifies me? I don't have qualifications really. I don't have technical qualifications. I just have a vibe of what I like and I have strong opinions about what I like and what is me.

"I'm not going to ever be a Vivienne Westwood or a John Galliano. I'm trying to make clothes to wear every day, that's what L.A.M.B. is. It's not a couture line.

"I think fashion is more of a fun sort of thing. It's an expression of yourself and your personality and your mood, it's not something we take super deep. For me the line is genuinely for myself. I want to make a line of clothes that I want to wear - it's kind of selfish."

Although Gwen admits she has no formal training she has always made her own outfits from a young age and often put together her own looks for performing.

She told CNN: "I just always liked getting dressed up and playing with make-up and hair. My mom and her mom and her mom, they all made clothes ... every holiday we would go to TJY, a little fabric store, and look at patterns and pick out our outfits.

"When I started with the band, when I was 17, I would waste all my time at school thinking about it (fashion) and drive to the fabric store and just find stuff.

"I didn't know how to sew very well, it really was like using glue guns and velcro and just trying to make it work. I think it all came from the music really - just trying to find fun outfits for the stage."