In a room full of stars, which one is the sun?

That’s a thing your Carpetbagger often wonders as he wanders through a dense thicket of celebrities at an award-season party. At these soirees, almost everyone is famous, but there is always one person so additionally compelling — think a Meryl or a Leo — that the center of gravity shifts when they enter.

The Hollywood parties this weekend, all held in advance of Sunday’s Golden Globes, haven’t lacked for big names like Bradley Cooper, Nicole Kidman and Viola Davis. Still, they were reduced to mere satellites whenever Billy Porter showed up, swanning through each crowd in a new wrap dress and cackling with evident pleasure.

“I’m black, I’m turning 50, and I’m fierce!” Porter crowed to me Friday night.

He was at W Magazine’s party at the Chateau Marmont to celebrate his Golden Globe nomination for best actor for the FX drama “Pose,” and though most of the men in our orbit wore tasteful suits, Porter was in a black dress with peekaboo cutouts and a wide-brimmed Gucci hat that was half-cowboy, half-coven. “It reminds me a little of Diane Keaton,” said Sarah Silverman, coming over to pay respects.

Earlier in the day, Porter had turned heads at the American Film Institute luncheon, where he posed for pictures with the likes of Mahershala Ali while wearing a goldenrod gown. No other dress in the room received quite as many compliments.