Question: Which American singer, songwriter, fashion designer, actress, and television personality of the band No Doubt wrote the song "Happy Now?"?

Context paragraphs:
Veronica Scott: Veronica Scott (born November 19, 1986) is an American television personality, fashion designer, and entrepreneur.  Scott is best known for being featured in the Current TV reality show "The Fuchsia Girls", which follows her personal and professional life as she pursues a career in the fashion industry.  Scott also co-owns the fashion company and design house Fuchsia with business partner Lawren Pope.

Project Runway Philippines: Project Runway Philippines is the Philippine adaptation of the American reality show "Project Runway".  This reality television series, which aims to find "the next big Filipino fashion designer," is produced by Solar Entertainment Corporation and Unitel Productions.  It is shown on ETC.  The series has an erratic airing schedule, as seasons 1 and 2 aired in 2008 and 2009, season 3 in 2012, and season 4 in 2105.  The show was hosted by model and actress Teresa Herrera during the first two seasons.  She was replaced by Filipina fashion legend Tweetie de Leon.  Fashion designer Jojie Lloren serves as mentor since the first season while Filipino top model and lifestyle feature writer Apples Aberin and fashion designer Rajo Laurel complete the judging panel.  The series fourth season ended on September 20, 2015.

Sofia Richie: Sofia Richie (born August 24, 1998) is an American fashion model.  She has been featured in campaigns by a number of major brands including Tommy Hilfiger, Michael Kors and Chanel.  She is the youngest daughter of singer and songwriter Lionel Richie and sister to fashion designer and television personality Nicole Richie.

Gwen Stefani: Gwen Renée Stefani ( ; born October 3, 1969) is an American singer, songwriter, fashion designer, actress, and television personality.  She is a co-founder and the lead vocalist of the band No Doubt that experienced major success after their breakthrough studio album "Tragic Kingdom" (1995) along with various successful singles, including "Just a Girl", "Don't Speak", "Hey Baby", and "It's My Life".  During the band's hiatus, Stefani embarked on a solo pop career in 2004 by releasing her debut studio album "Love.  Angel.  Music.  Baby. " Inspired by pop music from the 1980s, the album was met with both critical and commercial success.  It spawned three commercially successful singles: "What You Waiting For? ", "Rich Girl", and "Hollaback Girl", the latter reached number one on the "Billboard" Hot 100 while also becoming the first US download to sell one million copies.  In 2006 Stefani released her second studio album "The Sweet Escape".  The album produced two successful singles: "Wind It Up" and the album's title track "The Sweet Escape".  Her third solo album "This Is What the Truth Feels Like" was released in March 2016 and became her first solo number-one album on the "Billboard" 200.

Sabrina Bryan: Reba Sabrina Hinojos (born September 16, 1984), better known by her stage name Sabrina Bryan, is an American singer, actress, author, songwriter, fashion designer, choreographer, dancer, and television personality best known as a member of the girl group The Cheetah Girls, and for starring in the Disney Channel Original Movie of the same name and its sequels, "The Cheetah Girls 2" and "".  Before she appeared on television, Bryan was a dancer, and trained at Hart Academy of Dance, located in La Habra, California.

Margeaux: Margo Elaine Simms (born August 3, 1985), known professionally as Margeaux ( ), is a Canadian singer, songwriter, fashion designer and television personality.  She achieved recognition mostly for appearing on the VH1 reality television series "", .  Born in Toronto, Canada, she first pursued her music career in 2004.  While attending Ryerson University, where she studied fashion design, Margeaux first started singing mostly on hip hop tracks.  In 2005, she moved to New York City, New York to become a fashion designer, but soon decided to start a career as a professional musician.  She formed the group Test Drive with Nikko London and together they worked with producers such as Timbaland, Danja and The Runners along with DJ Khaled.

Érica García: Érica García, born April 6, 1968, Argentina, is a composer, singer and an actress of Argentinian-American descent.  She was nominated in the Latin Grammy Awards of 2000 for Best Female Rock Vocal Performance for her popular tune "Vete Destino".  While best known as a rock singer she also sings tango music and jazz.  She directs her own voice academy and has also worked as a dancer, writer, editor, painter, fashion designer and television personality among other creative endeavors.  Part of her ancestry can be traced to the Guaraní people.

Return of Saturn: Return of Saturn is the fourth studio album by American rock band No Doubt, released on April 11, 2000 by Trauma Records and Interscope Records.  It marked the band's first album as a quartet, following the departure of original keyboardist Eric Stefani in 1994.  After touring for two and a half years to promote their breakthrough third studio album, "Tragic Kingdom", No Doubt wrote several dozen songs for its follow-up and eventually settled on working with producer Glen Ballard.  Creating the album became a tumultuous process lasting two years, during which there was dissension among band members and between the band and its label.  The album was completed after the band returned to the studio and recorded what became two of the album's singles.

Heidi Montag: Heidi Blair Pratt (née Montag; born September 15, 1986) is an American television personality, singer, fashion designer, and author.  Born and raised in Crested Butte, Colorado, she befriended Lauren Conrad in 2005.  In 2006, Montag came to prominence after being cast in the MTV reality television series "The Hills", which chronicled the personal and professional lives of Conrad, Montag, and friends Audrina Patridge and Whitney Port.  During its production, she briefly attended the Fashion Institute of Design & Merchandising and was employed by event planning company Bolthouse Productions.  As the series progressed, Montag began dating fellow cast member Spencer Pratt, which ultimately ended her friendship with Conrad.  Their ensuing feud became the central focus of the series, and was carried through each subsequent season.

Happy Now? (No Doubt song): "Happy Now?"  is a song recorded by American rock band No Doubt.  It was released as the fifth single from their third studio album "Tragic Kingdom" (1995).  The single was issued on January 20, 1997 as a CD single.  It was written by Gwen Stefani, Tom Dumont, and Tony Kanal, with its production handled by Matthew Wilder.  Its lyrics allude to Stefani's relationship status with Kanal, who broke up their seven-year relationship when creating "Tragic Kingdom".

Supporting paragraphs: Happy Now? (No Doubt song) Gwen Stefani
Answer: Gwen Stefani