These magazine covers resemble the genre of music these artists are promoting. Michael Buble is dressed in a suit and the line says: "The old fashioned boy who charmed the world". His music could be seen as old fashioned because it is jazz and now there other kinds of music that is more popular.
Katy perry on the other hand is completely opposite she is wearing a skimpy outfit with big heels with a red sole to maybe represent her wild personality which is shown through her music videos. The line below is a pun representing some of her famous lyrics: "We photographed a girl and she like it". So both artists are represented differently in order to represent their genre of music. Below is Katy Perry's latest music video which is different because of the setting but again its shows how she is a unique artist because she is different and stands out.