From 2006 to 2007 she starred as Ruth on the series O Profeta. Castro starred as Sheila in the series Beleza Pura in 2008 and as Mariana in Escrito nas Estrelas in 2010. She has also had recurring roles in the series Morde & Assopra and Amor Eterno Amor. In 2013 she starred as Monica in the movie Trap.com and in 2013 she starred as Sonia in Open Road and Mariana in O Concurso. In August 2008 she appeared in the Brazilian issue of Playboy magazine. In 2013 she won the Brazilian version of Dancing with the Stars called Danca dos Famoso.