Opting for classic Hollywood glamour, the South African born royal was sure to heads in the fitted glittering dress which she paired with diamond earrings and a bold make-up look.
Princess Charlene and Prince Albert continued their show of unity as they the National Day with their children Princess Gabriella and Prince Jacques, eight.
Princess Charlene, 44, and her husband Prince Albert were joined by their twin children Gabriella and Jacques to attend church in Monte Carlo for National Day on Saturday.