Madonna has banned her daughter from dressing up for school - insisting the teenager's favourite revealing outfits should be kept for nights out.
The pair has teamed up for the singer's new Material Girl clothing line, with Lourdes, 13, designing a range of rock-chic pieces.
But Madonna is adamant her daughter should dress sensibly for lessons at New York's prestigious LaGuardia Arts academy.
Lourdes says, "No too low V-necks and I'm not allowed to wear shorts, like short shorts, unless I wear tights with them."
The Holiday hitmaker explains, "School's not a nightclub, that's what I say to her: 'Are you going to school or a nightclub?'"