Gardner was born in Los Angeles, California. She began acting on television at an early age. Appearing in a recurring role on Viper and guest-starred on ER. She later moved to New York City and graduated form the Juilliard School. Same time Gardner acted on stage appearing in such productions like For Colored Girls, The School of Night and The Seagull. She has appeared in a number of regional productions. Also, Gardner had a number of guest-starring roles on television shows such as Crossing Jordan, Bones, Heroes and Castle. Gardner worked as a voice actress playing Steela Gerrera in the Star Wars: The Clone Wars.
In 2016, Gardner was cast as a lead in the Oprah Winfrey Network drama series, Queen Sugar.
2024
as Scared Soul (voice)
2024
as Melissa / Announcer (voice)
2024
as Melissa (voice)
2018
as Katie Brooks
2017
as Alice
2016
as Megan McClaren
2016
as Megan McLaren
2016
as Charley Bordelon West
2014
as Samantha Williams
2011
as Erica Campbell
2009
as Simone Jenkins
2008
as Steela Gerrera / Rebel / Citizen (voice)
2008
as Steela Gerrera / Rebel (voice)
2006
as Elizabeth
2006
as Coed
2005
as Court Reporter
2001
as Leever
1994
as Sandy Rochon
1994
as Ronnie Wilkes