I've been a fan of Gwen Stefani's fashion style for a long time now. I loved the way she'd mix vintage looks with a edgy-rock/hip hop/LA style. With her fashion line L.A.M.B, you can see some of her signature styles in the clothes she sells.
The L.A.M.B. site is great and is good for background info, but the online store's selection is quite limited. I found a wider variety and better photographs on ShopBop.
Here are two items that really called to me. I love the pleated blazer in tweed with a 1/2" ruffle trim at the edges. Very stylish and feminine. I also like the new shapes in sweaters with this plaid sash turtleneck in cashmere. You can really see the influence Vivian Westwood had on Gwen.
Gwen didn't stop at clothes, in addition to another clothing line called "Harajuku Lovers", she teamed up with HP to design a special edition Harajuku Lovers Digital Camera. Only 300 were produced and you can purchase a camera on Amazon for only $231.99