Nicki Minaj was less than impressed after a magazine apparently retouched her photo.

The outspoken rapper and former American Idol judge appears on the cover of ESPN magazine's Music issue with American basketball player Kobe Bryant, and it seems she wasn't pleased with the finished product.

Starships singer Nicki shared a picture of the cover on Instagram with the words: "When retouching goes wrong."

The 31-year-old then shared other images from the photo shoot, before retouching.

She captioned one of the snaps: "I love my personal unretouched photos where my forehead doesn't mysteriously grow in length."

However, Nicki also said she was "so honoured" to have been part of the shoot with sports star Kobe.