Her mother , Maria João ( née Leal de Sousa ) , is a former swimsuit model from Brazil who appeared on the 1978 cover of `` Sports Illustrated '' , and her father , Alden Brewster , is an American investment banker .
Brewster was born in Panama City , Panama , the daughter of Maria João ( née Leal de Sousa ) , a former `` Sports Illustrated '' swimsuit model from Brazil , and Alden Brewster , an American investment banker .