James said he didn't host the party, of which a portion of the proceeds were to go to the Brown family, but he attended and was able to speak with Jackson, who flew in from Chicago for the event.
Brown died in a car accident on Dec. 8. His teammate, Josh Brent, has been charged with intoxication manslaughter after he was driving with a blood-alcohol level above the legal limit. Brent and Brown were reportedly seen at a different Dallas nightclub before the accident, which occurred early on that Saturday morning.
Nina Zavala, whose public relations and marketing firm helped publicize Wednesday's event at Zouk in Dallas, said Undergo Promotions, the company that organized the event months ago to coincide with James' Heat team coming to Dallas, decided at some point after the accident to make it in honor of Brown and to give 10 percent of the proceeds to the Brown family.
Cowboys fullback Lawrence Vickers paid for Jackson's flight from Chicago and said he was pleased the promoters wanted to help the Brown family. Vickers said weather prevented him from attending the event.
Zavala acknowledged that an event at a nightclub in honor of a player who died because his teammate was drinking and driving could raise some eyebrows.
"There was never any harm intended," Zavala said. "They were just trying to help. Since LeBron is a big Cowboys fan, they thought they'd tie it in. It was a lesson learned. I don't know if there was something different that could have been done, but they just wanted to help."
Zavala said there was transportation available for guests who were drinking and needed a ride home. That information was also on the invitations that were sent out, Zavala said.
She said the event had been planned for months, including the "Fade to Black Event" title on the invitations and the location at Zouk.
Information online about the party said it was scheduled to start at 10 p.m. at the club. The fliers say that it's "hosted" by James, but he reiterated that it was not his event and that he had nothing to do with the decision to give some of the proceeds to the Brown family.
"I had nothing to do with that part. I was just there," said James, who said he's been a Cowboys fans since he "started watching football" as a kid. "I had an opportunity to meet her, though, while I was there."
Zavala said Jackson was happy to meet James.
"She wanted to meet him and she was able to do that," Zavala said. "She was happy."
ESPNDallas.com's Calvin Watkins contributed to this report.