The Hills Gossip: Speidi, LC & Whitney Tell All

Cameras are already rolling again for The Hills girls (and Spencer), but that isn't stopping them from other summer pursuits, TV Guide reports.

From fitness plans to professional opportunities â€" not to mention outings to Les Deux, obvs â€" summer's just another season for new challenges.

At Sunday's Elizabeth Glaser Pediatric AIDS Foundation Carnival, Whitney Port, Lauren Conrad, Lauren "Lo" Bosworth, Heidi Montag and Spencer Pratt all made appearances to show their support for this important cause.

For Spencer Pratt, the event is an annual tradition.

"I grew up with [Elizabeth Glaser's son] Jake Glaser, so I've been coming to this event since I was in elementary school," he said. "We have so much love for this charity, and want to do anything we can to help out."

No word on whether Spencer was packing heat at the event.

But as people mobbed fiancee Heidi Montag, Spencer Pratt said that their summer was focused on finishing her album in time for The Hills Season 4.

"We're in the studio with Todd Chapman," Pratt said.

"He's doing all 12 songs. He's a genius."

As for her next music videos, however, Heidi Montag is losing one of her most notorious crew members. With a chuckle at his own expense (over his efforts with "Higer," Pratt said he would no longer be directing videos.

For now, music is the pair's only definite extra-curricular. That rumored Speidi spin-off is not happening "anytime soon," Pratt said.

"We love The Hills. [Maybe] when The Hills is over."

Also squashing her own spin-off rumors was Whitney Port.

"I don't know the story," she said. "I haven't even gotten a presentation of what it would be... It could be fun. I've been trying to stay a little more private, so it could be a little scary, but I'm open to it."

Lauren Conrad, meanwhile, has a serious summer fitness plan in the works. Guided by a personal trainer, LC said she knew she would soon be hitting the gym - and hopefully, reducing bikini body-busting foods.

Despite the fact that her summer beauty mantra is "less is more," she's also not overdoing it: Sweets and alcohol are staying on the menu.

Apart from her fitness plans, however, Lauren Conrad was also serious about taking time out for the Foundation: "We all live very fortunate lives," she said, "and it's nice if we can give up any time [for charity]."

Lauren Conrad, Lauren Bosworth and Whitney Port at the event.