the teen's political clobber read: "Legalize Gay: Repeal Prop 8 Now" and refers to a US constitutional amendment which says "only marriage between a man and a woman is valid or recognized in California".
The measure has proved controversial, with US President Barack Obama and rapper Jay-Z both recently stating that they believe gay people should have the right to marry.
Lourdes, 15, teamed the T-shirt with ragged green shorts and a black hoodie as she headed out in New York City today.
Lourdes' superstar mum could take some fashion tips from her daughter - as she recently revealed a manky toenail while stepping out in heels.
http://www.thesun.co.uk/sol/homepage/showbiz/4321179/Madonnas-daughter-Lourdes-Leon-gets-political-with-gay-rights-T-shirt.html source; UK SUN--