In 2001, Michaels moved to California, where she began working as a receptionist. Her modeling career led to nude photography, and then to porn. Gianna also performs in porn under the pseudonym "Becky." She began her career with photo shoots for websites and then began appearing in pornographic videos of various genres. She later starred in more daring pornographic scenes, such as deep oral sex and interracial sex. In 2006, Gianna won an award for "Favorite Breast." She has modeled for companies such as Brazzers, Bangbros, Evil Angel, and Naughty America.

In January 2007, Evil Angel released a film entirely dedicated to the actress, "G For Gianna" (directed by Jonni Darko).

The porn star admits she enjoys masturbating in various places (stairs, in the hallway near a mirror, and other places). She doesn't need vibrators; she uses her finger to satisfy her desires.
Date of Birth: June 6, 1983
Birth Name: Terah Wicker
Nicknames: ianna Micheals, Gianna Rossi, Gianna Michael, Gianna Nelson
Height: 180cm / 178cm
Weight: 66kg
Real Bust
Size: 34DD-27-38 / 36DD-28-40
Awards:
2007 AVN Award – Best Group Sex Scene,Video – a 12-person group scene in Fashionistas Safado: The Challenge (Evil Angel)
2007 FICEB Ninfa – Most Original Sex Sequence – a 12-person group scene in Fashionistas Safado
2007 XRCO Award - Best On-Screen Chemistry - Fashionistas: Safado
2008 AVN Award – Unsung Starlet of the Year
2008 AVN Award – Best Sex Scene in a Foreign-Shot Production – 10-person group scene in Furious Fuckers Final Race
2008 AVN Award – Best All-Sex Release – G for Gianna