Question: What was the second studio album of the singer featured in the Harajuku Lovers Tour?

Harajuku Lovers Live is the first live long-form video by American recording artist Gwen Stefani.  It was released on DVD on December 4, 2006, by Interscope Records.  The DVD was directed by Sophie Muller and produced by Oil Factory Productions.  It is a recording of one of Stefani's concerts during her Harajuku Lovers Tour 2005 in late 2005 to promote her first album, "Love.  Angel.  Music.  Baby. ", released in November 2004.  The performance was recorded in November 2005, in Anaheim, California.  The concert features performances of all twelve songs from "Love.  Angel.  Music.  Baby."  and two new songs from her second studio album, "The Sweet Escape", as well as interviews with the musicians and dancers and a documentary of tour preparation. <SEP>  The tour began through October to November 2005, to support of her debut studio album "Love.  Angel.  Music.  Baby. " (2004).  Although Stefani embarked on multiple tours with her band No Doubt, she initially opted not to participate in a tour to promote her album, an attitude that the singer eventually abandoned due to the commercial success of "Love.  Angel. The Harajuku Lovers Tour was the first solo concert tour of American recording artist Gwen Stefani.  Music.  Baby." <SEP> 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.  In 2006 Stefani released her second studio album "The Sweet Escape".  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.  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. <SEP> The Verizon Ladies First Tour was a co-headlining concert tour by American recording artists Beyoncé, Alicia Keys and Missy Elliott.  Canadian artist Tamia was featured as a special guest.  The tour, dubbed the "urban Lilith Fair" supported Elliott's fifth studio album, "This Is Not a Test! "; Keys' second studio album, "The Diary of Alicia Keys" and Beyoncé's first studio album, "Dangerously in Love".  The trek visited the United States performing in over twenty cities in March and April.  The outing was the first three-act show to feature three female R&B artist in a headlining role.  It became one of the biggest tours in 2004, placing 34th on Pollstar's "Top Tours of 2004"—earning over 22 million dollars.  The success of the tour promoted a 2005 leg but the plans were scrapped and Verzion focused on creating the Verizon VIP Tour.