A "Buffalo girl" rocks turquoise liner and black nails at L.A.M.B. Photo: Grace Gold for StyleList

Backstage at the L.A.M.B. Fall 2011 fashion show, the makeup and hair were so big and bold that only a style-savvy icon like designer Gwen Stefani could pull off the colors and tease with trademark confident ease.

MAKEUP: Charlotte Willer for Maybelline
HAIR: Danilo, using L'Oréal Professionnel
HAIR COLOR: Eva Scrivo for Inoa
NAILS: Pattie Yankee for Dashing Diva
SNAPSHOT: Gwen's Gangster Girls

L.A.M.B.'s Fall 2011 collection was divided into six tribes of girls that each came with a distinctive beauty look, yet all shared the common bond of daringly brazen attitude.

"Gwen is calling them her gang girls," Willer told StyleList.

The London girls featured strong brows and a punky black eye finished in grease and layering of eyeliner. Androgynous, short cuts were spiked to accentuate their street vibe. Buffalo girls flaunted voluminous poufs of crimped hair, accentuated by dramatic cat-eyes and thick slashes of turquoise liner lifting their lower lids.

Glam soldier girls displayed hair-raising amounts of height at the crown, with locks elegantly wrapped in '70s-era silk scarves. A palette of browns and opalescent shimmers made for the most muted look of all the groups.

The Ragamuffin and Mod girls both showed Twiggy influence with strong brows and superluxe lashes accentuated with black dots under the lower lash line. Pearly light beige lips made for a retro '60s feel. Hair ranged from a Gaga-esque pillbox-shaped updo to pinned up and accessorized with poor-boy caps.

No matter the group, all the out-there styles were created with hair pieces that had been precolored in an ombré effect.

"I call it bouffantry. Instead of burning a crimp into your hair or teasing it past breaking point, just buy a piece of hair and style that instead," said Danilo -- longtime personal stylist and best friend to Stefani.

"The key to making it work is to keep your own real hair around the front so the synthetic finish doesn't bust you. Clip the fake pieces into the back," added Danilo.

All models wore black nail polish as personally requested by Stefani, who wanted a neutral yet non-nude shade.

GET THE LOOK - MAKEUP: All products by Maybelline. Fit Me Foundation and Powder were used on all girls for a flawless starting canvas. Brows were filled in with brow powder, and lashes coated in Nature Luxe Mascara. Lipsticks used included Fifth Avenue Fuchsia No. 160, Bronze Beam No. 750 and So Pearly No. 725. Palettes in Under the Spotlight and Sunset Seduction added shades of brown to the eyes.

GET THE LOOK - HAIR: Jessica Simpson's Hair U Wear clip-in pieces were precolored with Inoa ammonia-free hair color. All other products by L'Oréal Professionnel. While styles differed drastically, they were all achieved by prepping with Gelee Riche for sleekness, as well as, Volumizing Mousse for height at the crown. Infinium Hair Spray #4 provided strong finishing hold.

GET THE LOOK - NAILS: All products by Dashing Diva. Apply two coats of Limo Service nail polish to shortly filed nails, finishing with the high shine Top Seal.

Check out our live interview with the designer backstage as she talks about life in fashion, music and motherhood!