The trailer for Sparkle debuted today, giving fans a look at Whitney Houston's final film performance in the Supremes-inspired remake.

The late singer returned to the big screen after a 16-year hiatus to play the mother of three girls trying to make it big in the music industry. Jordin Sparks, Cee Lo Green, Mike Epps, Derek Luke, Tika Sumpter and Amari Hardwick co-star in the movie set to hit theaters this summer.

This was intended to be a comeback role for Houston, who died Feb. 11.

Sparkle arrives in theaters on August 17.

Cissy Houston is opening up about the loss of her daughter Whitney.

The 78-year-old gospel singer tells New Jersey's My9's 10 O'Clock News:

"I have my moments. I'm not there yet. I don't think I'm any more courageous than anyone else. I am a true believer in God, if I could bring her back I would, but that's not possible."

Whitney passed away on February 11. When asked if she feels guilty for her daughter's death, Cissy says, “I know I did the best I could. I don’t blame myself. I know I did the best I could for everything.”

Cissy adds, "She was very special to me. She was my only daughter, and a good one.”

Click thru to read what Whitney's mom had to say about reports her daughter died broke.

Whitney Houston's official cause of death has been ruled as "drowning and effects of atherosclerotic heart disease and cocaine use," according to the singer's toxicology report released Thursday.

The report also states: "Cocaine and metabolites were identified and were contributory to the death. Marijuana, Alprazolam (Xanax), Cyclobenzaprine (Flexeril), and Diphenhydramine (Benadryl) were identified but did not contribute to the death."

Houston was discovered unresponsive in the bathtub by a member of her entourage at the Beverly Hilton Hotel on Feb 11, and later pronounced dead at the scene. Preliminary media reports suggested that her death would not ruled a drowning and that no water had been found in her lungs, so the Coroner's findings come as a surprise to many.

It is possible that Houston could have suffered a heart attack that caused her to lapse into unconsciousness and drown.

The 48-year-old Grammy winner is survived by her only child, daughter Bobbi Kristina Brown. The 19-year-old is the sole heir to Houston's estate.

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Bobbi Kristina has gone through quite an emotional past few weeks after suffering the sudden loss of mom Whitney Houston, but now it seems she's ready to move forward by tying the knot with an old family friend.

The 19-year-old was recently photographed in Atlanta getting cozy with Nick Gordon, 22, a young man her late mom informally adopted when he was just 12 years old. Kristina even flaunted a huge flashy engagement ring this week, which is said to have belonged to The Bodyguard star, who was reportedly wearing it at the time of her death.

"The situation is beyond sad. Whitney never formally adopted Nick, but he lived with her and Bobbi Kristina from the age of twelve and they were raised like brother and sister. Nick came from a really bad background," a family friend tells US mag.

The pair were apparently "always close," but after the death of the singer, their relationship began to evolve into something more serious. Bobbi's grandma and father, Bobby Brown, are said to be extremely upset over the couple's engagement, and are worried that it wont last.

"Bobbi Kristina is still so vulnerable since her mother passed away, but Nick has become like her rock," the source adds.

Kristina, who has decided to take the steps necessary to legally change her last name from Brown to Houston, first showed off the huge rock during her interview with Oprah Winfrey, which aired last Sunday.

"I'm doing as good as I possibly can at this point. I'm just trying to keep going," Bobbi confessed to Oprah. "I can sing her music, but to hear it now, I can't. I can hear her voice telling me, 'Keep moving, baby. I got you.' She's always with me. I can always feel her with me. She used to always say, 'Do you need me?' And I said, 'I always need you.'"

Would Whitney approve of this "sibling" union?

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It's been a month since Whitney Houston passed away and in her daughter Bobbie Kristina's first interview since the tragedy, she tells Oprah Winfrey, "I'm doing as good as I possibly can at this point. I'm just trying to keep going."

In the sit-down with Houston's and Bobby Brown's daughter, the 19-year old goes on to tell Winfrey:

"I can sing her music, but to hear it now, I can't. I can hear her voice telling me, 'Keep moving, baby. I got you.' She's always with me. I can always feel her with me. She used to always say, 'Do you need me?' And I said, 'I always need you.'"

What Kristina didn't know was that there were many others in the world who needed her mother too:

"I just saw her as mom. The first time I saw her as a worldwide icon was when we went on tour. And the funeral. . . She made an impact not only on a few people. She made an impact on the world."

Bobbi Kristina says she wants to do the same -- that she'll "... do the singing thing -- some acting, some dancing."

And she still feels comfort in what she believes to be the presence of her mother in the Atlanta brownstone they shared together:

"I feel her pass through me all the time. I wake up at night. She would say at 5 a.m. the saints start praying. I wake up now and look at the clock and it's 5 o'clock. I start praying."

Nearly one month after Whitney Houston passed away in the bathtub of a Beverly Hilton hotel room, the details of her will have finally been revealed.

According to the documents, which were originally signed in February 1993, Houston has left her entire estate to 19-year-old daughter, Bobbi Kristina, while Whitney's ex-hubby, Bobby Brown, was left nothing.

Kristina will not only inherit her mom's fortune, but all of her clothing, jewelry, furniture, personal items and cars, which will be put into a trust and given to her in increments when she turns 21 and 25. She'll receive the entire amount when she turns 30.

Meanwhile, Kristina has been receiving a bit of flack from her family for agreeing to appear in her first sit-down interview with Oprah Winfrey so soon after her mom's passing.

"There were members of the family who weren't keen on [the interview] going down at this time," a source tells People. "There are people who just want her to stay out of the limelight for a while. This is a little girl who just needs some time."

The source also says Kristina has always been anxious to peruse a music and acting career and, "has definitely wanted to walk in her parents' footsteps."

Bobbi Kristina's interview is set to air Sunday, March 11 on OWN's Oprah's Next Chapter.

Oprah Winfrey has landed the exclusive first interview with Whitney Houston's daughter, Bobbi Kristina.

In a quick preview, the 18-year-old daughter of Houston and Bobby Brown gets a big hug from Lady O.

The special, airing on OWN's Oprah's Next Chapter on March 11, also includes interviews with Whitney's sister-in-law and manager Patricia Houston and her brother Gary Houston.

Oprah Winfrey has snagged the interview everyone must have been vying for ... Sorry Matt Lauer! Sorry Kelly Ripa! ... The Queen of Daytime will sit down with Whitney Houston's 18-year-old daughter Bobbi Kristina for a March 11 chat on Oprah's Next Chapter on her network OWN.

The one-hour special will also include interviews with the late singer's sister-in-law/manager Patricia Houston and her brother, Gary Houston.

There has been much speculation about Bobbi Kristina's health since her mother's passing, particularly after she was hospitalized twice in the days following Houston's February 11 death. Then, Bobbi Kristina went missing in the hours after her mother's funeral but was later said, by a family member, to have been spending time alone to collect her thoughts.

Various reports claim the teen is haunted by the same addictions that led to Whitney's declining health -- some reports have even asserted that Houston did drugs with her daughter at times.

We bet Oprah will ask ALL the questions we all want to hear the answers to ... we'll tune in March 11th!