After her significant weight loss, Ock Joo-hyun became very popular in 2004. Crediting it to hard exercise and yoga, she has now become a poster child for yoga in Korea, even launching her own yoga studio. Her third album came out in 2007. Lee Hyori, though, has been the standout solo member, releasing her first solo album in 2003 which catapulted her to the top of the charts and won her many advertising contracts. However, she encountered controversy on her second album's lead song "Get Ya!", because it had elements that were very similar to Britney Spears's "Do Somethin'". Although she moved on to her second single "Shall We Dance?", promotional activities were quickly stopped. Her 2007 single "Toc Toc Toc", released in March 2007, reached #1 on the Music Industry Association of South Korea's monthly charts.