WHITNEY HOUSTON, BOBBY BROWN and their daughter, BOBBI KRISTINA, made it a family affair Saturday at Disneyland for the premiere of 'Princess Diaries 2: The Royal Engagement,' which she co-produced. It was a rare public appearance for the superstar, who in March of this year entered rehab of her own volition.

ET host MARK STEINES was on-hand to catch up with Whitney, who had just flown in from China where she performed three concerts. The pop diva told him that she was feeling good, and that no matter what the press says, she doesn't expect anything to come between her and Bobby, and that they will be together "for the long haul."

She attributes their longevity to "God" and "family." "You have support of family, people who love you, you can make it," she said. "You can do it."

It has been a tumultuous few years for Whitney and Bobby, her husband of nearly 14 years, who has been arrested several times. Last December, he was taken into custody on suspicion of battery after an argument left her visibly injured.

In 2002, Whitney admitted to ABC's DIANE SAWYER that she has used alcohol, marijuana, cocaine and prescription drugs at different points during her career. She faced a drug possession charge in January 2000 after marijuana was allegedly found in her handbag at the airport in Hawaii. The charge was later dismissed.

"Everybody has their time," the top diva told ET. "You know, if you had all good times, you can't appreciate them." "There's got to be something that goes wrong to make it right again," Bobby agreed.

Everything seemed right at the premiere of 'Diaries,' which catches up with teen princess ANNE HATHAWAY as she prepares to accept the throne of the fictional land of Genovia. Whitney co-produced the movie and says she had plenty of training as a "princess" growing up.

"I'm a queen now," she joked. "I'm not a princess anymore."

The movie opens Wednesday, August 11. For the very latest on Whitney, watch Monday's ET!

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