- Uses the nickname Gabby.
- While a psychology major at City College in New York, took bit parts in stage shows such as Peter Pan and The Wiz.
- Without formal acting training, she burst onto the scene with a memorable debut as the title character in the 2009 film Precious: Based on the Novel 'Push' by Sapphire, the story of an obese teenager trying to overcome sexual and emotional abuse.
- Was obsessed with N'Sync as a teen (admitting to going to 23 of their concerts), and was thrilled when Justin Timberlake announced her Golden Globe nomination for Precious.
- 2009, Oscar — Best Performance by an Actress in a Leading Role: Nominee
- 2010, BAFTA Film Awards — Best Leading Actress: Nominee
- 2009, Screen Actors Guild Awards — Outstanding Performance by a Female Actor in a Leading Role: Nominee
- 2010, Golden Globe — Best Performance by an Actress in a Motion Picture - Drama: Nominee
- 2009, Screen Actors Guild Awards — Outstanding Performance by a Cast in a Motion Picture: Nominee
- 2010, Critics' Choice Movie Awards — Best Actress: Nominee
- 2010, Independent Spirit Awards — Best Female Lead: Winner
- Ahmed Sidibe — Brother
- Ibnou Sidibe — Father
- Alice Tan Ridley — Mother
- Attended Borough of Manhattan Community College, New York, New York, United States; attended the City University of New York, City College, New York, New York, United States; attended Mercy College, New York, New York, United States
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