Gwen Stefani became the singer for her brother Eric's band No Doubt in 1986. Ten years later in 1996, Don't Speak from their third studio album Tragic Kingdom(which would go on to sell more than 20 million copies) became a number one hit in 10 countries worldwide.

With the rest of No Doubt in 1997. As the frontwoman of an otherwise all-make band, Gwen gained increasing popularity for her distinctive platinum blonde locks and ska-meets-retro style.

Gwen and No Doubt win at the MTV Music Video Awards, taking home the Moon Man for Best Group Video for their hit Don't Speak. The same year they were also nominated for two Grammy Awards, Best New Artist and Best Rock Album.

Gwen pictured with then boyfriend Gavin Rossdale at the Scream 2 premiere. The pair met when No Doubt supported Rossdale's band Bush on tour in 1995 and began dating shortly after Gwen split from bandmate Tony Kanal.

One of the singer's most daring looks, Gwen sported henna tattoos, bindis, blue hair and a fluffy bikini top at the MTV Music Awards in 1998.

Continuing to experiment with colour, Gwen dyed her hair bright pink in 1999, which she flaunts on the cover of No Doubt's fourth album Return of Saturn.

Going into the Noughties, Gwen's love of retro glamour started to shine through, as illustrated by this outfit from the My VH1 Music Awards in 2000, complete with pin curls, a sailor girl influence and make-up worthy of a '50s pin-up.

At the height of No Doubt's success, Gwen's popularity led to collaborations on the singles South Side with Moby and Let Me Blow Ya Mind with Eve, for which they later won a Grammy.

Gwen Stefani won the My Favourite Female Artist award at the short-lived My VH1 Awards in 2001. No Doubt's Jamaican dance-hall inspired album Rock Steady was released to largely positive reviews, with the band's evolving sound reflected in Gwen's outfit choices of the time (note the red, green and yellow sweatbands).

Midriff-baring cropped tees and bikini tops became a Stefani trademark, as did perfect red lips and strong, bold colours.

The success continues for Gwen and No Doubt, with the band picking up the awards for Best Pop Video and Best Group Video at the 2002 MTV Music Video Awards.

In 2002, Stefani wed long-term love Gavin Rossdale, famously having two wedding ceremonies, one in London and the other in Los Angeles. Stefani joked it was so that she could wear her custom-designed wedding dress by John Galliano twice.

Following on from Gwen's successful collaborations with Eve and Moby, No Doubt performed alongside Sting during halftime of the Super Bowl in San Diego.

With shorter, even blonder hair and an excited grin, Gwen launched her new L.A.M.B (an acroynym for love, angel, music, baby) fashion label for LeSportsac at the Four Seasons Restaurant in New York City.

2004 would prove to be a massively successful year for Gwen, and she kicked things off wiht No Doubt by winning the Grammy for Best Pop Vocal Performance by a Duo or Group.

Taking her retro-fabulous style to the next level, Gwen was asked to play Jean Harlow in the Martin Scorsese film The Aviator, also starring Leonardo DiCaprio. To prepare for the role, Stefani reportedly watched 18 of Harlow's films and read two of her biographies.

In 2004 No Doubt went on hiatus, and Gwen took the opportunity to launch a solo career. She debuted her first single What You Waiting For? The accompanying video saw Gwen adopt an Alice in Wonderland style, albeit with a Japanese twist complete with Harajuku girls.

The release of Gwen's first solo album, Love. Angel. Music. Baby followed quickly behind her first single, and saw Gwen accompanied by her collective of Harajuku girls. Gwen's style also took on a haute couture element with the start of her solo career.

In early 2005 Gwen further added to he growing awards collection, earning herself the Brit Award for Best International Female - beating the likes of Kylie Minogue and Alicia Keys.

Gwen Stefani the designer takes to the catwalk in 2005 at her L.A.M.B by Gwen Stefani Spring/Summer 2006 fashion show during New York Fashion Week.

Gwen gives her rocker style a sophisticated edge with glossy hair and a black blazer as she poses with her Pop/Rock Favorite Female Artist trophy at the 2005 American Music Awards.

Four years after marrying, Gwen Stefani and Gavin Rossdale announced that they were expecting their first child. Gwen styled her baby bump for the 2006 Grammy Awards with a leopard print gown from her own L.A.M.B. label.

Just months after giving birth to son Kingston, Gwen went back to work with the release of her second solo album, The Sweet Escape. Her look during this period took on a glamorous, jet-set style, with lots of white clothing and glossy gold accessories, as with this outfit from the American Music Awards.

As always, Gwen makes a statement with her hair, and this sculpted, swirly pompadour quickly becomes one of her most unique, fun hairstyles to date at the 2006 Billboard Music Awards in Las Vegas.

Gwen poses at her L.A.M.B. showroom as she works on her Spring/Summer 2007 collection.

In December 2006, Gwen announced that she had joined forces with Coty and was working on her first fragrance, adding a beauty arm to her L.A.M.B. clothing label. The scent 'L' was released the following year.

In early 2008, Gwen and husband Gavin announced that they were expecting their second child. A heavily-pregnant Gwen was spotted cheering on close friend Roger Federer at Wimbledon in July, and second son Zuma was born in August.

No Doubt ends their hiatus, and Gwen rejoins the boys tp perform on NBC's Today Show at the Rockefeller Center in New York City. To mark the occassion, Gwen revived her original ska-girl style with a Fred Perry polo shirt and tie dye jeans.

An official member of the fashion elite, Gwen poses with American Vogue editor Anna Wintour at Bloomingdale's celebration for Fashion's Night Out.

Despite having a music career and two children, Gwen dived in to creating regular collections for L.A.M.B. Here she is pictured with models models wearing her Autumn Winter 2010 collection at her presentation during New York Fashion Week.

Gwen's Spring/Summer 2011 L.A.M.B. collection took on a tribal theme, with bold, clashing prints, bright colours and beaded accessories.

In 2010 Gwen was honoured with a wax figurine at Madame Tussauds Las Vegas at the Venetian Resort Hotel Casino, which featured her signature pompadour, red lips and killer abs.

Gwen is accompanied by her son Kingston on the catwalk at the end of her L.A.M.B. Autumn/Winter 2011 show.

Securing her status as a modern day beauty icon, Gwen was unveiled as the latest A-list face of L'Oréal Paris. Unsurprisngly, she fronted the US campaign for their Infallible La Rouge Lip Color and will later this year star in a TV ad, filmed during the Cannes Film Festival.

Gwen and Gavin up the glamour stakes at the 2011 Cannes Film Festival. Pictured here at the premiere for The Tree of Life, Gwen works a sequinned jumpsuit with bouncy 70s curls and pink lipstick.