Christina Aguilera and Kesha turned up the glamour as they led the stars at the second annual party on National PrEP Day.On Saturday night, the two pop superstars showed off their sex appeal as they dressed up in daring, sheer looks for the special occasion. The pop divas made show-stopping arrivals in West Hollywood for the event held by telehealth platform MISTR to raise awareness of pre-exposure prophylaxis (PrEP), reduce stigma surrounding HIV and expand healthcare access. Aguilera, who revived her hit song Lady Marmalade on its 25th anniversary for a recent beauty ad, flaunted her tiny waistline in a racy, black outfit with dramatic, over-the-knee boots.She wore a see-through, cross-covered top layered over a lacy bra and leather micro shorts. On the red carpet, Kesha, 39, showed off her pert derriere and posed for a cheeky snapshot with fellow singer Tove Lo, as the duo placed their hands on each other’s hips. Christina Aguilera and Kesha turned up the glamour as they led the stars at the second annual party on National PrEP Day. On Saturday night, the two pop superstars showed off their sex appeal as they dressed up in daring, sheer looks for the special occasionThe TiK ToK hitmaker put on a bold display in a skintight, sheer dress in an animal-print pattern. She went braless underneath the long dress with sleeves connected to gloves.Like Aguilera, she styled her hair in messy beach waves and rocked a sultry, smoldering makeup look.Aguilera attended the party after she stirred up fan discourse about her appearance at the opening of the Obama Presidential Center in Chicago in June. Aguilera’s blonde locks were styled in their signature waves as she took to the stage, but some social media users immediately noted that her face may have been altered with the help of heavy makeup or some surgical tweaks. Fans of the pop star said she looked like an ‘imposter’ in response to her performance at the star-studded event. For the event, Tove Lo wore a T-shirt halter dress with daring cutouts that showed off her curves.Other stars at the event include Chappell Roan, Demi Lovato and Kim Petras. The party was also attended by social media mogul Bella Poarch, model Emily Ratajkowski and many Bravo franchise stars. Aguilera flaunted her tiny waistline in a racy, black outfit with dramatic, over-the-knee boots She wore a see-through, cross-covered top layered over a lacy bra and leather micro shorts The TiK ToK hitmaker put on a bold display in a skintight, sheer dress in an animal-print pattern On the red carpet, Kesha showed off her pert derriere and posed for a cheeky snapshot with Tove Lo, as the duo placed their hands on each other’s hips For the event, Tove Lo wore a T-shirt halter dress with daring cutouts that showed off her curves