Margarita Sierra

Who was Margarita Sierra?

Margarita Sierra, born as Maria Margarita Suarez Sierra in Madrid, Spain, was a singer, dancer, and actress perhaps best known for her supporting role as the nightclub-singing Cha Cha O'Brien on the early 1960s ABC/Warner Brothers television series, Surfside 6, with Troy Donahue, Van Williams, Lee Patterson, and Diane McBain.

Episodes of Surfside 6 often featured Sierra singing, usually in English but occasionally in Spanish. The Cha Cha Twist, a song featured during the show's second and final season, was released as a single on Warner Brothers Records but did not enter the Billboard Top 100 chart.

Sierra died in Hollywood, California, in 1963 at the age of twenty-seven from complications following heart surgery performed a day earlier. She is interred at Holy Cross Cemetery in Culver City, California.