What the translation actually says:
Rarity fell for an enchanting internship in the fashion world: she had a chance to come up with the design of the showcase and hit the leadership, which, it would seem, is difficult to impress. However, the inspiration left Rarity, and she decided that she was doomed to failure. Help comes, where did not expect: from the popular and mysterious street artist.
Google Translate seems to imply it’s about Rarity getting a fashion internship in Canterlot but losing inspiration, only to find it again from a street artist.
Still its probably the one with prim hemline.
Rarity fell for an enchanting internship in the fashion world: she had a chance to come up with the design of the showcase and hit the leadership, which, it would seem, is difficult to impress. However, the inspiration left Rarity, and she decided that she was doomed to failure. Help comes, where did not expect: from the popular and mysterious street artist.
So its probably the one with prim hemline.