Simplify the following text for a Grade 7 native English-speaking person.
Original: Victoria Principal ( born January 3 , 1950 ) is an American actress , best known for her role as Pamela Barnes Ewing on the CBS nighttime drama Dallas from 1978 to 1987 .
Simplified: Her most notable acting was playing Pamela Barnes Ewing in the nighttime television show Dallas . She was born January 3rd , 1950 .