(written from a Production point of view)
Kimberly Cullum (born 29 November 1981; age 38) is the actress who played Gia in the Star Trek: The Next Generation seventh season episode "Thine Own Self". She was nominated for a Young Artist Award for her performance on Star Trek: The Next Generation. Cullum's costume from her appearance in this episode was later sold off on the It's A Wrap! sale and auction on eBay. 
Born as Kimberly Claire Cullum in Los Angeles, California, USA, she began acting professionally at the age of seven, when she appeared in the 1989 made-for-television movie The Revenge of Al Capone, starring Keith Carradine. Since then, she has amassed of Young Artist Award nominations for her roles in the television movie The Sitter (1991, co-starring Brett Cullen and Eugene Roche), the drama The Rapture (1991), and the television movie Grave Secrets (1992, also featuring Dakin Matthews).
Of her eight Young Artist Award nominations, she has won two: her first was for her work in an three-episode arc on Quantum Leap, starring Scott Bakula and Dean Stockwell and also guest-starring Parley Baer, Fran Bennett, and Meg Foster. She won her second Young Artist Award for her appearances on the sitcom Home Improvement, playing the daughter to Mark L. Taylor's character. Among her other credits are appearances on Fresh Prince of Bel-Air, Empty Nest (in an episode with Robert Costanzo and Megan Gallagher), and VR.5 (with Louise Fletcher), the television movie Long Shadows (1994, with Matt Frewer), and the fantasy comedy Monkey Trouble (1994, with Aaron Lustig and Christopher McDonald) and the drama/comedy Maverick (1994, with Henry Darrow, Stephen Liska, William Marshall, and Bert Remsen).
In 1995, she and Don Stark were regulars on the short-lived series Bless This House. Cullum has not acted since her Young Artist Award-nominated appearance on Nothing's Sacred in 1998. More recently, Cullum worked as assistant to director Michael Katleman on the television series Reunion (2005) and on the horror film Primeval (2007) and to producer Matt Zolmach on the comic adaptations The Amazing Spider-Man (2012, produced by Stan Lee and music by James Horner) and The Amazing Spider-Man 2 (2014, written and produced by Stan Lee, Alex Kurtzman, and Roberto Orci).