Question: Australia's Got Talent judge Geri Halliwell used to be a part of what pop group?

Context articles: Australia's Got Talent (season 7)
Australia's Got Talent (season 8)
Calling (Geri Halliwell song)
Mi Chico Latino
Look at Me (Geri Halliwell song)
Ian Dickson (TV personality)
Australia's Got Talent (season 6)
Australia's Got Talent
Geri Halliwell
Canada's Got Talent

Australia's Got Talent is an Australian reality television show, based on the original UK series, to find new talent.
 The seventh season aired on the Nine Network from 11 August 2013 until 10 November 2013.
 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.
 French, Timomatic and Halliwell replaced original judge Dannii Minogue and Brian McFadden, while Morris replaced Grant Denyer.
 It was the first time that the show aired on another network, following its axing from the Seven Network in October 2012.
 The auditions took place from March–April 2013.
Australia's Got Talent is an Australian reality television show, based on the original UK series, to find new talent.
 Nine announced that the show would be returning in 2016 for an eighth season.
 It is the second season to air on Nine after it was axed in 2013.
 Auditions are open for September and October 2015.
 On 28 October 2015, it was announced that Halliwell, French, Timomatic and Sandilands have been replaced with a new panel of judges, they are Kelly Osbourne, Ian "Dicko" Dickson, Sophie Monk and Eddie Perfect.
 Morris did not return as host as she is committed to another show and was replaced by Dave Hughes as the host.
 For the first time, this season introduced the Golden Buzzer.
 The season premiered on 1 February 2016.
"Calling" is a song by British singer-songwriter, Geri Halliwell.
 It was released as the third and final single from Halliwell's second album "Scream if You Wanna Go Faster".
 Just like Halliwell's previous single, "Scream If You Wanna Go Faster", the success for the song was limited.
 In certain region, the song was released in a French version, called "Au Nom De L'Amour".
 The song was praised for both lyrics and production.
 The black and white music video was directed by Pierluca DeCario.
 To promote the single, Halliwell performed the song on "Top of the Pops", "Top of the Pops Germany", "", "Children in Need" 2001, "Blue Peter", "This Morning" and "Pepsi Chart".
"Mi Chico Latino" (English: "My Latin Boy"), is a song recorded by English singer Geri Halliwell for her debut solo album "Schizophonic" (1999).
 It was written by Halliwell, Andy Watkins and Paul Wilson, whilst produced by the latter two, who are known collectively as Absolute.
 "Mi Chico Latino" was released as the album's second single on 16 August 1999, by EMI.
 It is a Latin pop song which is centred on a lost love theme.
 The song was written by Halliwell in order to pay homage to her mother, who has Spanish background, whilst it also has a number of Spanish lyrics.
"Look at Me" is a song by British singer-songwriter Geri Halliwell, who recorded and released it after leaving Spice Girls.
 Written and composed in collaboration by Halliwell, Paul Wilson, and Andy Watkins, it was released on 10 May 1999 as the first single from Halliwell's debut solo album, "Schizophonic."
 It peaked at number two at the UK Singles Chart, and at number three in both Australia and Canada.
 To promote the single, Halliwell performed the song on "Top of the Pops," "Party in the Park," "Wetten Dass", "Tickled Pink," "Tapis Rouge," "Musica Si," "Festival Bar 1999," "The Rosie O'Donnell Show," "Graine de Star," and "The Tonight Show with Jay Leno."
Ian Ross Perrygrove (born 28 March 1963) better known as Ian "Dicko" Dickson is an English Australian television and radio presenter, television producer, music journalist and former record company executive and talent scout.
 He is best known as a talent judge on "Australian Idol", "The Next Great American Band" and more recently "Australia's Got Talent".
 Dicko spent over twenty years working in the record industry in both the U.K. and Australia, working inside iconic labels such as Creation Records, Sony, A&M and BMG.
 Dicko has worked with big music acts including Celine Dion, Ozzy Osbourne, Primal Scream and Pearl Jam.
Australia's Got Talent is an Australian reality television show, based on the original UK series, to find new talent.
 The sixth season aired on the Seven Network from 16 April 2012 until 25 July 2012.
 Dannii Minogue, Brian McFadden and Kyle Sandilands returned as judges, as well as Grant Denyer as host.
 The auditions took place from October–December 2011, and the filming of the show took place from February–March 2012.
 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.
 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.
Australia's Got Talent is an Australian reality television talent show which premiered on 18 February 2007 on the Seven Network.
 The show is based on the "Got Talent" series format that originated in the United Kingdom with Simon Cowell.
 The original judges were Tom Burlinson, Red Symons and Dannii Minogue.
 Burlinson and Symons did not return for season four and were replaced by Brian McFadden and Kyle Sandilands.
 Dawn French, Timomatic and Geri Halliwell joined the panel in season seven as replacements for McFadden and Minogue.
 All four judges from season seven will be replaced by Kelly Osbourne, Ian "Dicko" Dickson, Sophie Monk and Eddie Perfect in season eight.
Geraldine Estelle "Geri" Horner (née Halliwell; born 6 August 1972) is an English pop singer-songwriter, clothes designer, author and actress.
 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.
 In 1998 Halliwell left the Spice Girls, though she rejoined the group when they reunited in 2007.
 Halliwell reportedly amassed a $40 million fortune during her last two years in the group.
Canada's Got Talent is a Canadian reality talent show series that debuted on the Citytv network on March 4, 2012, and part of the global "Got Talent" franchise.
 The logo used for "Canada's Got Talent" does not follow the logo from "America's Got Talent", but instead follows the logo from "Britain's Got Talent".