Gwen Stefani is planning another major fashion campaign after signing up to create a new leisurewear collection with Citizens of Humanity designer Michael Glasser. The No Doubt singer, who tasted style success with her L.A.M.B. and Harajuku Lovers fashions, and Glasser have joined forces under the label Design with Purpose. Their first 18-piece collection, which launched on Monday (06Jan14), features a trouser made of Tencel, vests, T-shirts and premium denim items. Stefani says, "What's so great about DWP for me is it's different from anything I've ever done, working in L.A. and having the factory right here. With L.A.M.B., we have so many categories within the collection and you have different factories that do specific things, so you are a little detached...The actual designs are very simple because it's all about everyday wear. So that's different and new." The pregnant pop star tells WWD.com, "I was trying to get all the basics. Michael nailed the bottoms. For tops, I was trying to think about what I wear besides a tank top. I love cuffed-up sleeves, tops that are long in front and short in back. And we did a jumpsuit and a dress to fill in the gaps."