One Twitter user wrote, "Madame Tussaud's Germany is trying to convince the world this is Nicki Minaj Lol."
Another Twitter user wrote, "The Madame Tussaud's wax figure of Nicki Minaj looks more like Amy from Waterloo road, try and change my mind."
"Sis don't look like that," another social media poster wrote.
The museum and a representative for Minaj did not immediately respond to a request for comment, People reported.
A Las Vegas figure of Minaj, 37, at the Madame Tussauds location also had some critical comments, People reported. The Vegas figure also had Minaj in the same pose, the magazine reported.
It is also not the first time wax figures at Madame Tussauds have been panned by fans. In May, the wax figure of Ariana Grande was harshly criticized, CNN reported.