It's Qiyana has to be. Although the fashion world is still stuck in skinny 6'0 exotic models as their standard of beauty, the rest of the world has embraced T H I C C for lack of a better word as the latest one Due to the onset of social media and body acceptance becoming more ubiquitous. Breaking the longstanding tradition of only 5'11 - 6'0 size 2 having a chance at making it in the modern fashion circuit has been the latest hot topic/controversy in that world.
Qiyana has that body type in spades being fairly short (5'2 - 5'5) while definitely not fitting a size 2 and on a consumer level she is exactly what people want to see rather than the "tall but petite" phenomenon that has prevailed since early twentieth century France.
https://upload.wikimedia.org/wikipedia/commons/2/20/LeFrou_Frou1900Page128.gif
In this 1900 French cartoon, two small-breasted women criticize a large-breasted woman for not conforming to this fashion.
This is right after LV was founded in France in the late 1800s, so for them this is an opportunity for a big publicity stunt. Them partnering with League helps Riot on the E-Sports scene, it lends legitimacy because LV designs the case for the FIFA World cup which is the most watched sporting event ever.
It doesn't really suit LV in the fashion scene until you realize that this is an opportunity for them to chip away at a standard they helped create at a different time in history. To show that they are willing to move forward with the rest of the world and blaze a trail that other fashion brands have to take notice. Of course it's not all going to happen through some silly video game, but it gives them an opportunity to show a change in mindset and that can snowball into lasting change.