Whitney Houston sings the National Anthem before a game with the New York Giants taking on the Buffalo Bills prior to Super Bowl XXV at Tampa Stadium on January 27, 1991 in Tampa, Florida. The Giants won 20-19. (Photo by George Rose/Getty Images)

Whitney Houston sings during the closing ceremony of The World Cup before the Italy vs. Brazil 1994 World Cup final at the Rose Bowl Stadium in Pasadena, California. (Photo by Billy Stickland/ALLSPORT)

Whitney Houston in the new movie "The Preachers Wife" in 1996.

Whitney Houston, Husband Bobby Brown And Daughter Arrive At The 4th Annual International Achievement In Arts Awards In Los Angeles, Ca, October 11, 1998. ( (Photo By Dan Callister/Getty Images)

Whitney Houston and Bobby Brown at the 12th Annual Soul Train Music Awards in Los Angeles, CA, February 27, 1998. She received the Quincy Jones Awards for 'Outstanding Career Achievement' in the field of entertainment. (Photo by Brenda Chase / Online USA, Inc.)

In An Historic First-Time Duet, Two Of Today's Biggest Female Recording Artists, Whitney Houston (R) And Mariah Carey, Record The Song 'When You Believe,' Produced By Kenneth 'Babyface' Edmonds, For The Sountrack Of Dreamworks' Epic Drama 'The Prince Of Egypt.' (Photo By Getty Images)

Soul diva Whitney Houston performs at the MTV Europe Music Awards 1999, The Point, Dublin, Republic of Ireland, November 11, 1999. She picked up an award at the ceremony for Best R'n'B Act. (Photo by Dave Hogan/Getty Images)

Whitney Houston at the 2000 Grammy Awards held in Los Angeles, CA on Febuary 23, 2000. (Photo by Scott Gries/ImageDirect)

Dionne Warwick and Whitney Houston share a laugh during rehearsals for a musical number for the Academy Awards March 26, 2000 at the Shrine Auditorium in Los Angeles. Houston would later be dismissed from performing due to rumors of drug abuse and mental instability. (Photo by Liaison Agency)

Michael Jackson makes a special appearance with Whitney Houston during KTU's 'Miracle on 34th St.' concert at Madison Square Garden in New York City on December 19, 2000. (Photo by Scott Gries/Getty Images)

Singer Whitney Houston and her husband Bobby Brown (C) leave the Dekalb County Courthouse after a hearing stemming from Brown's 1996 traffic violations November 25, 2002 in Decatur, Georgia. A motion to dismiss the charges was denied and Brown's trial is scheduled for January 21, 2003. (Photo by Frank Mullen/Getty Images)

Musician Whitney Houston performs live for an NBC show December 8, 2002 at Lincoln Center in New York City. (Photo by Mark Mainz/Getty Images)

Singer Whitney Houston and her husband singer Bobby Brown arrive May 25, 2003 in the southern town of Dimona, Israel. Houston was invited by the Black Hebrew community in Israel. (Photo by Uriel Sinai/Getty Images)

Chaplain Don Hughes (L) prays with Whitney Houston (2nd L) and the rest of her entourage after probation violation hearing for her husband, singer Bobby Brown at the DeKalb County Courthouse August 27, 2003 in Decatur, Georgia. Brown was sentenced to 14 days in the DeKalb County jail followed by 60 days of house arrest for violating conditions of his probation, stemming from 1996 DUI charges. …

Singer Whitney Houston is seen performing on stage during the 2004 World Music Awards at the Thomas and Mack Center on September 15, 2004 in Las Vegas, Nevada. (Photo by Pascal Le Segretain/Getty Images)

Singer-actress Whitney Houston onstage during the taping of '25 Strong: The BET Silver Anniversary Celebration' at The Shrine auditorium in Los Angeles, California. The event highlighted 25 years of programming on Black Entertainment Television. (Photo by Vince Bucci/Getty Images)

Whitney Houston (L) is presented with the BET Honor by Ne-Yo (R) during the 2010 BET Honors at the Warner Theatre on January 16, 2010 in Washington, DC. (Photo by Kris Connor/Getty Images)

Whitney Houston performs on ABC's 'Good Morning America' on September 1, 2009 in New York City. (Photo by Larry Busacca/Getty Images)

Singer Whitney Houston accepts the Winner of International - Favorite Artist Award onstage at the 2009 American Music Awards at Nokia Theatre L.A. Live on November 22, 2009 in Los Angeles, California. (Photo by Kevork Djansezian/Getty Images)

Singer Whitney Houston (M)and daughter Bobbi Christina Brown arrive to the Joe Calzaghe of Wales and Bernard Hopkins light heavyweight bout at Thomas & Mack Center on April 19, 2008 in Las Vegas, Nevada. (Photo by Ethan Miller/Getty Images)

Whitney Houston performs at Mediolanum Forum on May 3, 2010 in Milan, Italy. (Photo by Vittorio Zunino Celotto/Getty Images)

Singer Whitney Houston performs live during a concert at the O2 World on May 12, 2010 in Berlin, Germany. The concert is part of the 2010 Nothing But Love tour to promote the album I Look To You. (Photo by Jakubaszek/Getty Images)

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Singers Whitney Houston (L) and Dionne Warwick perform onstage at the 2011 Pre-GRAMMY Gala and Salute To Industry Icons Honoring David Geffen at Beverly Hilton on February 12, 2011 in Beverly Hills, California. (Photo by Larry Busacca/Getty Images)

Chaka Khan (left), and Whitney Houston perform during the finale of the VH1 DIVAS LIVE '99 at the Beacon Theatre in New York on Tuesday, April 13. Other performers include Brandy, Tina Turner, and Cher, with a special performance by Elton John. Photo by Frank Micelotta/ImageDirect.

Whitney Houston (L) and Bobby Brown (R) arrive at the premier of Bravo's new show June 27, 2005 in Atlanta, Georgia. (Photo by Todd Bennett/Getty Images)

Singer Jennifer Hudson (R) accepts the Best R&B Album from singer Whitney Houston (L) during the 51st Annual Grammy Awards held at the Staples Center on February 8, 2009 in Los Angeles, California. (Photo by Kevin Winter/Getty Images)

Sony Music Worldwide Chief Creative Officer Clive Davis (L) and singer Whitney Houston perform at the 2009 GRAMMY Salute To Industry Icons honoring Clive Davis at the Beverly Hilton Hotel on February 7, 2009 in Beverly Hills, California. (Photo by Kevin Winter/Getty Images)

View of the Beverly Hilton Hotel before the Clive Davis and The Recording Academy's 2012 Pre-GRAMMY Gala And Salute To Industry Icons Honoring Richard Branson on February 11, 2012 in Beverly Hills, California. It was reported that singer Whitney Houston was found dead at the Beverly Hilton hotel on February 11, 2012. (Photo by Kevin Winter/Getty Images)

LA Police attend the Beverly Hilton Hotel in the early hours of February 12, 2012 in Los Angeles, CA. Singer and film star Whitney Houston aged 48 has died in her hotel room at the Beverly Hilton Hotel. (Photo/Toby Canham/Getty Images)

LA Coroners arrive and after time leave the Beverly Hilton Hotel possibly carrying the body of the singer Whitney Houston in the early hours of February 12, 2012 in Los Angeles, CA. Singer and film star Whitney Houston aged 48 has died in her hotel room at the Beverly Hilton Hotel. (Photo/Toby Canham/Getty Images)

LA Coroners arrive and after time leave the Beverly Hilton Hotel possibly carrying the body of the singer Whitney Houston in the early hours of February 12, 2012 in Los Angeles, CA. Singer and film star Whitney Houston aged 48 has died in her hotel room at the Beverly Hilton Hotel. (Photo/Toby Canham/Getty Images)

Signage remembering Whitney Houston is seen on the streets of Manhattan on February 11, 2012 in New York City. (Photo by Chelsea Lauren/Getty Images)

Signage remembering Whitney Houston is seen on the streets of Manhattan on February 11, 2012 in New York City. (Photo by Chelsea Lauren/Getty Images)

Topics trending on Twitter at 9:44 p.m. EST on the iPhone of a Madison Square Garden employee on February 11, 2012 in New York City. Singer Whitney Houston died this afternoon at The Beverly Hilton hotel in Beverly Hills, CA. (Photo by Taylor Hill/Getty Images)

(L-R) Producer Swizz Beatz, singer Alicia Keys and Chief Creative Officer of Sony Music Entertainment, Clive Davis arrive at the Clive Davis and The Recording Academy's 2012 Pre-GRAMMY Gala And Salute To Industry Icons Honoring Richard Branson on Feburary 11, 2012 in Beverly Hills, California. It is believed that Whitney Houston passed away inside of the Beverly Hilton Hotel. (Photo by Jason …

A general view of atmosphere as fans mourn Whitney Houston's passing on February 11, 2012 in Los Angeles, California. (Photo by Toby Canham/Getty Images)

Sony Music Worldwide Chief Creative Officer Clive Davis (L) and singer Whitney Houston perform at the 2009 GRAMMY Salute To Industry Icons honoring Clive Davis at the Beverly Hilton Hotel on February 7, 2009 in Beverly Hills, California. (Photo by Kevin Winter/Getty Images)