Alexa Ellesse Vega (born August 27, 1988) is an American actress, singer and pianist. She is best known for playing Carmen Cortez in Spy kids trilogy-In 2003, she was named one of that year's hottest teen celebrities in Vanity Fair In 2004, Vega finished filming two films: Sleep over and State's Evidence, and in the following year starred in a made for-television drama entitled Odd Girl Out as a victim of cyber-bullying. She also filmed for another made-for-TV movie, Walkout. In June 2006, she finished filming Remember The Days which came out to limited theaters in April 2007. She also finished filming Repo! The Genetic Opera, which was released in 2008. Vega has also been confirmed as the lead role in Helix , written and directed by Aram Rappaport, which began filming in Chicago in March 2008. Vega was originally cast in Robert Rodriguez's Shorts, however, due to her being in Australia for the filming of Broken Hill, she had to be recast. She was replaced by Kat Denning's.
In 2009, she played Ruby Gallagher on the ABC family television sitcom Ruby & The Rockits, which also starred Patrick & David Cassidy. The series was not renewed for a second season.
Vega made her Broadway debut in Hairspray in 2007.