(CNN) First it was Prada. Then Gucci. Now, Katy Perry is being called out for creating fashion that evokes blackface.

The singer's namesake brand faces criticism over two styles of shoes that some say feature racist imagery.

Perry debuted her line of whimsical shoes in 2017 in a partnership with Global Brands Group. The shoes are available on the brand's website, Katy Perry Collections, and through retailers around the world including Dillard's and Walmart in the United States.

The two styles in question, Ora Face Block Heel and Rue Face Slip-On Loafers, were released in summer 2018 as part of a collection in nine colors, including black, Perry and Global Brands Group said in a statement.

Both styles include the same protruding eyes, nose and full red lips. They were "envisioned as a nod to modern art and surrealism," according to the joint statement.