Cierra Alexa Ramirez (born March 9, 1995) is an American actress and singer. She portrays Mariana Adams Foster in the ABC Family series, The Fosters. Ramirez made her first TV appearance when she was 10 year old in Showtime at the Apollo performing a song named "I Am Changing". Cierra was an opening act for Earth Wind and Fire, Chicago and American Idol's Ruben Studdard, Kimberly Caldwell and Ace Young. Ramirez is signed to Temper Music Group and currently recording her debut album. Cierra was cast as Kathy, a recurring character, in The Secret Life of the American Teenager that makes her first appearance in the 100th episode. She also stars Girl in Progress, portraying one of the lead roles, Ansiedad, for which she won an ALMA Award for Favorite Movie Actress Supporting Role. She portrays