Question: What 1990's girl group was Australia's Got Talent fourth season judge Geri Halliwell a member of?

<P0-S0> The Spice Girls were an English pop girl group formed in 1994. <P0-S1>  The group originally consisted of Melanie Brown ("Scary Spice"), Melanie Chisholm ("Sporty Spice"), Emma Bunton ("Baby Spice"), Geri Halliwell ("Ginger Spice"), and Victoria Beckham, née Adams ("Posh Spice"). <P0-S2>  They were signed to Virgin Records and released their debut single "Wannabe" in 1996, which hit number one in 37 countries and established them as a global phenomenon. <P0-S3>  Their debut album "Spice" sold more than 31 million copies worldwide, becoming the best-selling album by a female group in history. <P0-S4>  Their follow-up album "Spiceworld" sold over 20 million copies worldwide. <P0-S5>  The Spice Girls have sold 85 million records worldwide, making them the best-selling female group of all time, one of the best-selling pop groups of all time, and the biggest British pop phenomenon since Beatlemania. <P0-S6>  Among the highest profile acts in 1990s British popular culture, "Time" called them "arguably the most recognisable face" of Cool Britannia, the mid-1990s celebration of youth culture in the UK. <SEP> <P1-S0> Geraldine Estelle "Geri" Horner (née Halliwell; born 6 August 1972) is an English pop singer-songwriter, clothes designer, author and actress. <P1-S1>  In 1998 Halliwell left the Spice Girls, though she rejoined the group when they reunited in 2007. <P1-S2>  Halliwell reportedly amassed a $40 million fortune during her last two years in the group. <P1-S3>  Halliwell came to international prominence in the 1990s as Ginger Spice, a member of the successful girl group the Spice Girls; together they sold over 85 million records worldwide, making them the best selling girl group of all time. <SEP> <P2-S0> Australia's Got Talent is an Australian reality television show, based on the original UK series, to find new talent. <P2-S1>  The seventh season aired on the Nine Network from 11 August 2013 until 10 November 2013. <P2-S2>  French, Timomatic and Halliwell replaced original judge Dannii Minogue and Brian McFadden, while Morris replaced Grant Denyer. <P2-S3>  It was the first time that the show aired on another network, following its axing from the Seven Network in October 2012. <P2-S4>  The auditions took place from March–April 2013. <P2-S5>  Kyle Sandilands returned as a judge for his fourth season, and was joined by Dawn French, Timomatic and Geri Halliwell, as well as Julia Morris as the new host. <SEP> <P3-S0> Australia's Got Talent is an Australian reality television show, based on the original UK series, to find new talent. <P3-S1>  The sixth season aired on the Seven Network from 16 April 2012 until 25 July 2012. <P3-S2>  Dannii Minogue, Brian McFadden and Kyle Sandilands returned as judges, as well as Grant Denyer as host. <P3-S3>  The auditions took place from October–December 2011, and the filming of the show took place from February–March 2012. <P3-S4>  Todd McKenney was a guest judge at the Melbourne auditions, in the absence of Sandilands, and the second show of the finals showdown, in the absence of McFadden. <P3-S5>  This was Minogue and McFadden's final series as judges, as they were replaced by Dawn French, Geri Halliwell and season 5 contestant Timomatic in season 7.