There was a time, pre-Beychella—as in, Beyoncé’s historic 2018 Coachella headline performance—when the emblematic California music festival was known for its freewheeling, bohemian sensibility: A sun-drenched American counterpart to England’s muddy, gritty Glastonbury. That is no longer the case. Instead, Coachella today is representative of an America transformed by the Covid-19 pandemic, Donald Trump, and well, yes, Queen Bey. It’s about scale, marketing, content, and influence—and influencers. The biggest tell is its lineup of headliners, which each year goes more mainstream and more pop. This time around, it’s Sabrina Carpenter, Justin Bieber, and Karol G who have the honor. What they wore last week—and what people wore to see them, and possibly what they have in store this weekend for round two—is where Coachella’s transformation has become most evident. Beyoncé was the first Black woman to headline Coachella, and her performance, which broke viewership and streaming records for the festival and spawned a Netflix documentary, quickly became the new standard. “Homecoming” paid tribute to historically Black colleges and universities, and its costumes were created by …