She mass produced her foremost film appearance at Three years old; moving as a immature toddler to the US and to television, Cartwright appeared for seven seasons in the United states TV series Make Room For Daddy. She besides appeared within many films & became far-famed swimming Brigitta von Trapp in The Healthy of Music (1965). Her shivering vocal delivery was put to expert apply once she played a exitable immature Penny Robinson in the hit TV series Wasted Inside Space (1965-1968). She as well appeared in the revival picture Lost In Space in 1998.

When A Healthy Of Music she mass produced there are no more films until Beyond the Poseidon Adventure (1979) but appeared typically in TV.

Cartwright has besides appeared in the theatre & TV commercial message. She was one of a 1st stars to choose benefit of the World Wide Web and has had her have web site for many years. She has experienced of these successful book published & is presently publication a second written sustaining Bill Mumy a co-star from a television indicate Misused Around Space.

Her older sister is actress Veronica Cartwright.