"_As part of the roll out, Qiyana and Senna, two League of Legends champions who will also be members of True Damage, will get in-game Prestige skins designed by Louis Vuitton’s artistic director of women’s collections, Nicolas Ghesquière._"
"_Senna’s Louis Vuitton skin will be released early next year, and capsule collections designed by the brand are also in the works._"
This has also been confirmed by Riot's in their twitter account but I dont go to twitter cause its a hell hole.
Seeing how All (or most) K/DA members got a prestige edition of their skin, its probably safe to assume that most of the TRUE DAMAGE skins will get a Louis Vuitton prestige edition.
Also, prestige points from 2019 wont carry out to 2020, so keep that in mind as well.