Celebrity Fashion Stuns at MISTR's 2nd Annual National PrEP Day Celebrities like Demi Lovato, Tinashe, Kim Petras, and Christina Aguilera among others were in attendance at the MISTR's 2nd Annual National PrEP Day at The Abbey in West Hollywood, California At the recent MISTR's 2nd Annual National PrEP Day at The Abbey in West Hollywood, California, several celebrities showcased their unique and daring fashion choices. Pop star Christina Aguilera wore a striking black bra and corset-detailed briefs under a sheer layer decorated with crosses, paired with Christian Louboutin's black Circus Max Botta Alta 100 thigh-high boots. Another notable performer at the event was Charli XCX, who donned a custom Julia O'Callaghan all-black look featuring mini-shorts with lace-up details, a bra, and a dramatic sheer layer with ruffles. She completed her look with black stiletto pumps, exuding elegance and confidence on stage.