The singer performs at the pre-Grammy gala & Salute to Industry Icons, held in Beverly Hills, California, on February 12, 2011. Reuters
Pop singer Whitney Houston performs in 1984 in New York. Getty Images
Houston sings at the Poplar Creek Music Theatre in Hoffman Estates, Illinois, on June 25, 1985. Getty Images
Houston in concert, circa 1986. Getty Images
Performing in 1987. Getty Images
At a concert at Wembley Stadium in London on May 5, 1988. Reuters
Houston sings the National Anthem during the pregame show at Super Bowl XXV in 1991. Getty Images
The American singer and actress smiles as she receives three World Music Awards in Monte Carlo on May 4, 1994. Reuters
Performing at the White House on October 4, 1994. Reuters
South African President Nelson Mandela and Houston on November 10, 1994. Reuters
Houston sings during a rehearsal for the 38th Grammy Awards at the Shrine Auditorium on February 27, 1996. Reuters
Houston with her husband Bobby Brown and their daughter Bobbi Kristina at the premiere of Houston's made-for-television movie, Cinderella, on October 13, 1997 at Mann's Chinese Theatre in Hollywood. Reuters
Houston, left, and Faith Hill perform during the 1998 Billboard Music Awards on December 7 in Las Vegas. Reuters
Magic Johnson and Houston dance during the taping of the premier of the latter's television show, The Magic Hour, on June 8, 1998 in Los Angeles. Reuters
Houston performs with dancers during the VH1 television network's broadcast concert Diva's Live 99 at New York's Beacon Theatre, on April 13, 1999. Reuters
Houston with the Best Female R&B Vocal Performance Award she won at the 42nd annual Grammy Awards in Los Angeles, on February 23, 2000, for the song It's Not Right But It's Okay. Reuters
Houston performs at the Arista Records 25th anniversary television special in Los Angeles on April 10, 2000. Reuters
Houston was being lined up to star in the next James Bond film, Britain's Sun tabloid reported on March 21, 2001. Reuters
Houston accepts the Lifetime Achievement Award at the first annual Black Entertainment Television awards at the Paris Las Vegas hotel-casino in Las Vegas on June 19, 2001. Houston's mother Cissy Houston and daughter Bobbi Kristina Brown look on. Reuters
From left, Beyonce Knowles, Jewel, Mary J Blige and Houston perform during the finale of the VH1 Divas Duets concert at MGM Grand Garden Arena in Las Vegas, Nevada, on May 22, 2003. Reuters
US singers Houston, second from right, and Dionne Warwick, second from left, perform a song beside Waris Dirie, left, from Somalia and Russian cosmonaut Valentina Tereschkowa, during the Women's World Awards gala in Hamburg, Germany on June 9, 2004. Reuters
Houston at the taping of 25 Strong: The BET Silver anniversary celebration at Shrine auditorium in Los Angeles on October 26, 2005. Reuters
Houston performs at the 2009 Grammy Salute to Industry Icons event honouring Clive Davis in Beverly Hills, California on February 7, 2009. Reuters
The singer performs at the pre-Grammy gala & Salute to Industry Icons, held in Beverly Hills, California, on February 12, 2011. Reuters
Pop singer Whitney Houston performs in 1984 in New York. Getty Images
Houston sings at the Poplar Creek Music Theatre in Hoffman Estates, Illinois, on June 25, 1985. Getty Images
Houston in concert, circa 1986. Getty Images
Performing in 1987. Getty Images
At a concert at Wembley Stadium in London on May 5, 1988. Reuters
Houston sings the National Anthem during the pregame show at Super Bowl XXV in 1991. Getty Images
The American singer and actress smiles as she receives three World Music Awards in Monte Carlo on May 4, 1994. Reuters
Performing at the White House on October 4, 1994. Reuters
South African President Nelson Mandela and Houston on November 10, 1994. Reuters
Houston sings during a rehearsal for the 38th Grammy Awards at the Shrine Auditorium on February 27, 1996. Reuters
Houston with her husband Bobby Brown and their daughter Bobbi Kristina at the premiere of Houston's made-for-television movie, Cinderella, on October 13, 1997 at Mann's Chinese Theatre in Hollywood. Reuters
Houston, left, and Faith Hill perform during the 1998 Billboard Music Awards on December 7 in Las Vegas. Reuters
Magic Johnson and Houston dance during the taping of the premier of the latter's television show, The Magic Hour, on June 8, 1998 in Los Angeles. Reuters
Houston performs with dancers during the VH1 television network's broadcast concert Diva's Live 99 at New York's Beacon Theatre, on April 13, 1999. Reuters
Houston with the Best Female R&B Vocal Performance Award she won at the 42nd annual Grammy Awards in Los Angeles, on February 23, 2000, for the song It's Not Right But It's Okay. Reuters
Houston performs at the Arista Records 25th anniversary television special in Los Angeles on April 10, 2000. Reuters
Houston was being lined up to star in the next James Bond film, Britain's Sun tabloid reported on March 21, 2001. Reuters
Houston accepts the Lifetime Achievement Award at the first annual Black Entertainment Television awards at the Paris Las Vegas hotel-casino in Las Vegas on June 19, 2001. Houston's mother Cissy Houston and daughter Bobbi Kristina Brown look on. Reuters
From left, Beyonce Knowles, Jewel, Mary J Blige and Houston perform during the finale of the VH1 Divas Duets concert at MGM Grand Garden Arena in Las Vegas, Nevada, on May 22, 2003. Reuters
US singers Houston, second from right, and Dionne Warwick, second from left, perform a song beside Waris Dirie, left, from Somalia and Russian cosmonaut Valentina Tereschkowa, during the Women's World Awards gala in Hamburg, Germany on June 9, 2004. Reuters
Houston at the taping of 25 Strong: The BET Silver anniversary celebration at Shrine auditorium in Los Angeles on October 26, 2005. Reuters
Houston performs at the 2009 Grammy Salute to Industry Icons event honouring Clive Davis in Beverly Hills, California on February 7, 2009. Reuters
The singer performs at the pre-Grammy gala & Salute to Industry Icons, held in Beverly Hills, California, on February 12, 2011. Reuters