She is best known for her role as Juanita Solis on Desperate Housewives.
De La Garza has been bullied about her weight and her sister Demi Lovato has spoken out about Madison and herself being bullied.[2][3]
In December 2010, De La Garza announced via her Twitter page that she was making a বড়দিন present for her sister Demi who was undergoing treatment for "physical and emotional issues".[4][5] This present included messages from Lovato's অনুরাগী along with their usernames on Twitter.