Kim Kardashian hit up the Fifteen Percent Gala in Los Angeles … and, she brought 100% of her style — stunning in a gorgeous black gown.

The reality television star turned fashion mogul pulled up to the event Saturday night … a gala in support of the Fifteen Percent Pledge — a promise businesses make to ensure at least 15% of the products on their shelves are from Black-owned businesses.

As soon as she arrived, KK was surrounded by photogs … who took a series of photos of her gorgeous gown that ya gotta see for yourself.

Kardashian wore an all-black dress with sheer material around her hips … and, when she turned, she revealed the entirety of her back to the cameras.

Kardashian’s dress only barely contained her famous backside … and, almost certainly captivated the assembled crowd.

Worth noting … Kim has a personal connection to the Fifteen Percent Pledge — ’cause Emma Grede, a founding partner in Kardashians’ SKIMS, is the Chairwoman of the project.

Grede cohosted last night’s event with the pledge’s founder, Aurora James, actress Tracee Ellis Ross and designer Brandon Blackwood.