In January 2010, "Baby", was released from his debut album, My World 2.0. The song featured Ludacris, and became an international hit. It charted at number five on the U.S.Billboard Hot 100, peaked at number three on the Canadian Hot 100[40] and reached the top ten in several international markets.[28] Two promo singles "Never Let You Go", and "U Smile" were top thirty hits on the U.S. Hot 100, and top twenty hits in Canada.[28] According to review aggregator Metacritic, the album has received "generally favorable reviews".[41] It debuted at number one on the U.S. Billboard 200, making Bieber the youngest solo male act to top the chart since Stevie Wonder in 1963.[42] My World 2.0 also debuted at number one on the Canadian Albums Chart, Irish Albums Chart, Australian Albums Chart, and the New Zealand Albums Chart[28] and reached the top ten of fifteen other countries.[43][44]
To promote the album, Bieber appeared on several live programs including The View, the 2010 Kids Choice Awards, Nightline, Late Show with David Letterman, The Dome and106 & Park.[45] Sean Kingston appeared on the album's next single, "Eenie Meenie". The song reached the top ten in the United Kingdom and Australia, and the top-twenty of most other markets. On April 10, 2010, Bieber was the musical guest on Saturday Night Live.[46] On July 4, 2010, Bieber performed at the Macy's Fourth of July Fireworks Spectacular in New York City.[47] The following single from My World 2.0, "Somebody to Love", was released in April 2010, and a remix was released featuring Bieber's mentorUsher. On June 23, 2010, Bieber went on his first official headlining tour, the My World Tour, starting in Hartford, Connecticut, to promote My World and My World 2.0. In July 2010, it was reported that Bieber was the most searched for celebrity on the Internet.[48] That same month his music video for "Baby", surpassed Lady Gaga's "Bad Romance" to become the most viewed, and most disliked YouTube video ever.[49][50] In September 2010, it was reported that Bieber accounted for three percent of all traffic on Twitter, according to an employee of the social-networking site.[51]
In Bieber's second album, because of puberty, his voice was deeper than it was in his first album.[52] In April 2010, the singer discussing his vocals remarked, "It cracks. Like every teenage boy, I'm dealing with it and I have the best vocal coach in the world. [...] Some of the notes I hit on "Baby" I can't hit anymore. We have to lower the key when I sing live."[53] Bieber guest-starred in the season premiere of the CBS crime drama CSI: Crime Scene Investigation, which aired on September 23, 2010. He played a "troubled teen who is faced with a difficult decision regarding his only brother", who is also a serial bomber. Bieber was also in a subsequent episode which aired on February 17, 2011, in which his character is killed.[54] Bieber performed a medley of "U Smile", "Baby", and "Somebody to Love" and briefly played the drums at the 2010 MTV Video Music Awards on September 12, 2010.[55] Bieber announced in October 2010 that he would be releasing an acoustic album, called My Worlds Acoustic.[56] It was released on November 26, 2010 in the United States and featured acoustic versions of songs from his previous albums, and accompanied the release of a new song titled "Pray".[57]
A 3-D part-biopic, part-concert film starring Bieber entitled Justin Bieber: Never Say Never, was released on February 11, 2011, directed by Step Up 3D director Jon Chu. It topped the box office with an estimated gross of $12.4 million on its opening day from 3,105 theaters.[58] It grossed $30.3 million for the weekend and was narrowly beaten by the romantic comedy Just Go with It, which grossed $31 million.[59] Never Say Never reportedly exceeded industry expectations, nearly matching the $31.1 million grossed by Miley Cyrus's 2008 3-D concert film, Hannah Montana & Miley Cyrus: Best of Both Worlds Concert, which holds the record for the top debut for a music-documentary.[60] Never Say Never grossed a total of $98,441,954 worldwide.[61] The film is accompanied by his second remix album, Never Say Never – The Remixes, released February 14, 2011, and features remixes of songs from his debut album, with guest appearances from Miley Cyrus, Chris Brown, and Kanye West, among others.[62]
In June 2011, Bieber was ranked #2 on the Forbes list of Best-Paid Celebrities under 30. He is the youngest star, and 1 of 7 musicians on the list, having raked in $53 million in a 12-month period.[63] On November 1, 2011, Bieber released the Christmas-themed Under the Mistletoe, his second studio album. It debuted at #1 on the Billboard 200, selling 210,000 copies in its first week of release.[64]
