Chappell Roan DJs at The Abbey for PrEP Day with Christina Aguilera, Charli xcx & More

The "Pink Pony Club" was in full swing at The Abbey as Chappell Roan hit the stage for a DJ performance of her smash hit as a massive lineup of celebs gather for National PrEP Day! Chappell brought the house down Saturday night, DJing at the iconic…