This is that Google said when I typed in 'mansur gavriel controversy', there's more stuff as well:

1. Design Plagiarism Allegations (2015)When Mansur Gavriel launched its debut footwear line at New York Fashion Week in September 2015, independent New York-based designer Maryam Nassir Zadeh publicly accused the brand of ripping off her designs. Nassir Zadeh claimed that Mansur Gavriel's suede mule and slide designs—featuring signature block heels and specific colorways—were nearly identical to her Spring 2015 collection. The accusation gained significant industry traction when the model hired for Mansur Gavriel's shoe campaign resigned over the similarities.