Vega has been a professional actress since age four, when she played Burt Reynolds' daughter in the TV series Evening Shade. Best known for Robert Rodriguez's popular Spy Kids movie trilogy, Vega has also appeared in the films Twister as the young Helen Hunt, Little Giants, Nine Months, Ghosts of Mississippi, The Deep End of the Ocean, Sleepover and State's Evidence. Her television credits include Ladies Man, opposite Alfred Molina, ER, Chicago Hope and the lead in the Lifetime feature Odd Girl Out. She was most recently seen starring in the HBO film, Walkout and just completed the independent film, The Beautiful Ordinary