Kylie Jenner stepped out alongside a plethora of celebrities in Paris on Wednesday, September 26, to attend singer Rosalía‘s birthday party. Kylie was joined at the celebration, which was held at Hôtel Particulier, by her sister, Kendall Jenner, supermodel Gigi Hadid and close friend Anastasia “Stassie” Karanikolaou. For the glitzy occasion, Kylie wore a figure-hugging…