For nearly 18 years, Beyonce's father, Mathew Knowles, was the guiding force behind his daughter's career. In March 2011, Beyonce announced she was letting her father go as her manager. Find out why she says letting him go was one of the hardest things she's ever done and how her documentary 'Beyonce: Life Is But a Dream' helped her heal.

Before giving birth to her daughter, Blue Ivy, in January 2012, Beyonce suffered a miscarriage -- something she opens up about for the first time in her new documentary, Beyonce: Life Is But a Dream. Now, she tells Oprah why it was the hardest thing she's ever been through, why she kept it a secret and how it affected the way she approached her pregnancy with Blue Ivy.

On January 7, 2012, Beyonce and her husband, Jay-Z, welcomed their daughter, Blue Ivy, to the world. Watch as Beyonce opens up about how pregnancy changed her, why she felt like she was able to communicate with her daughter during childbirth, and what her 13-month-old's personality is like.

Beyonce says there's a time and place for letting the public in on the details of her personal life. Watch as she opens up to Oprah about how she figured out who she was in the prism of fame and why she still struggles with the disease to please.

Beyonce is a global superstar, multiplatinum artist and a 17-time Grammy winner. Now, Oprah wants to know if Beyonce feels pressure to out-Beyonce herself? Watch as the singer gives her answer in this exclusive online footage.

In the documentary 'Beyonce: Life Is But a Dream,' Oprah says audiences get a great sense of the relationship the superstar singer has with her husband, rapper Jay-Z. Find out why Beyonce says she would not be the woman she is today if she didn't have Jay-Z in her life.

She's a wife, mother and superstar. Beyonce took the stage just three months after giving birth to her daughter, Blue Ivy, to see if becoming a mom had affected her love of performing. Find out why she says she's still in love with her job, and watch as she opens up about gaining 57 pounds during her pregnancy.

Oprah sits down with global superstar, multiplatinum artist and 17-time Grammy winner Beyonce.

In Cissy Houston's book, Remembering Whitney, Cissy writes that her daughter, Whitney Houston, nicknamed her Big Cuda because she was tough like a barracuda. Watch as Cissy tells Oprah how Big Cuda came to Whitney's rescue any time something went wrong on the road.

While taking Oprah on a tour of her New Jersey home, Cissy Houston, a Grammy-winning vocalist and mother of Whitney Houston, shows Oprah one of her prized possessions: an engraved bracelet given to her by music icon Elvis Presley. What nickname did Elvis give Cissy? Find out now.