Bleeding Apocalypse
I think they're called mermaid dresses, the style that's kind of form-hugging and then flares out at the knees/calves.
I believe the style of dress is actually very popular here. Maybe not within your particular circle of friends, but in general, yes. Very much so. The raver style items were very well-received and I see quite a few people using them. Brightly-colored dresses and accessories are also highly requested items. I wholeheartedly believe that if the name Nicki Minaj was left out of the title, and if the dresses alone were presented without her wearing them, the idea would be far better received. People have the same kneejerk reaction to her name that they had with Lady Gaga (and they made items based off of her style anyway that still sell for a couple hundred thousand gold) and say, "EW, NO, HORRIBLE" even though the items themselves are popular and well-liked.
I'm not convinced they'd be better received without her name attached but then I really do loath that horrible clashing 'style'.
Maybe OP should try again leaving the name out.
Conversely, following on from Hayes point, to link a star to a trend/style would suggest they were known for it. Like Lennon and his glasses, Freddie and his tash or the cape and crown combo, Bon Jovi and his hair ...