Lauren Conrad grabs a slice of pizza at “Monetti’s NY” in New York City on Thursday afternoon.

The 22-year-old Hills star then made a quick change into a strapless mini at her hotel and headed to the MTV Upfronts, which announces the TV network’s lineups for the upcoming season in the hopes that advertisers will spend billions of dollars in commercial spots.

Peep-toe shoes by Christian Louboutin. More Here! »

Lauren Conrad arrives at a studio in Culver City, Calif. on Tuesday.

Earlier today, we reported that The Hills has been renewed for a fourth season! Get ready for more of the gang!

The finale for the current season of The Hills airs next week on Monday, May 12. The new season will premiere in August with 19 new episodes.

10+ pictures of Lauren Conrad, the Culver City cutie… More Here! »

The Hills has definitely been renewed for a fourth season, reports Us Weekly. (In Touch reported this back in December.)

“They just started shooting,” an insider says. “The fourth season will be about what they ended up doing this summer. Lauren [Conrad] and Whitney [Port] will still be working at People’s Revolution.”

The finale for the current season of The Hills airs this Monday, May 12. The new season will premiere in August with 19 new episodes.

The Hills star Lauren Conrad arrives at LAX airport to catch a flight on Thursday.

On the Late Show with David Letterman, Heidi Montag was not optimistic about her relationship and feud with Lauren Conrad. When asked if they could be friends, Heidi responded, “I don’t think so. After blaming a sex tape on me and making a whole season about it…I am not so sure.”

Barack Obama however, was much more optimistic on his visit to the Late Show. “My first act as President will be to stop the fighting between Lauren and Heidi on The Hills,” he read as part of his Top Ten “Surprising Facts” about himself.

More Here! »

The Hills stars Lauren Conrad and Stephanie Pratt grab lunch at West Hollywood’s Urth Cafe on Melrose Avenue on Wednesday.

She-Pratt and L.C. were also seen drinking their boba (bubble tea) as they waited for the valet.

Now all we need to add to this mix is Kristin Cavallari!

25+ pictures inside of BFFs Lauren Conrad and Stephanie Pratt… More Here! »

Lauren Conrad enjoys a romantic lunch with boyfriend Doug Reinhardt, a minor leaguer for the Baltimore Orioles, while filming a scene from The Hills at the Creperie in Los Angeles on Tuesday.

Doug is the sister of Casey Reinhardt, who was on Season 2 of the MTV reality TV show, Laguna Beach: The Real Orange County. (The Hills is a spin-off of Laguna.)

Other pictures include Lauren and Doug (both 22) leaving GOA nightclub together in Hollywood and celebrating Stephanie Pratt’s birthday at Boulevard 3 on Sunset. There are also pics below of Lauren at the LG Electronics (LG) Launch of the Scarlet HD TV Series at the Pacific Design Center in West Hollywood this past Monday.

20+ pictures inside of Doug Reinhardt wooing Lauren Conrad… More Here! »

Here is the alternate version of the cover of The Hills girls during their Rolling Stone cover shoot.

And for kicks, here’s one more quote from the wise Spencer Pratt: “It’s jealousy, man. It’s human. I’m jealous of Jay-Z, Bill Gates, Rupert Murdoch. I feel for these people who wish they could be on reality television and not in their cubicles. You got to thank your haters.”

Heidi added, “You have to understand, we have so many fans. The haters are the ones who ask us for photos. The haters are the ones who are downloading songs. The world works on haters now.”

You can check out more behind-the-scenes shots of Heidi Montag, Audrina Patridge, Lauren Conrad and Whitney Port at RollingStone.com.

The stars of the hit MTV reality show The Hills take the latest cover of Rolling Stone to talk about the show, the drama and their unusual brand of fame.

Yes, Lauren Conrad and Heidi Montag were together for the cover photo shoot. Here are some quotes from the interview:

Heidi on thinking the cover shoot might have been a scam: “I thought I was walking into Punk’d or getting killed or something,”

Spencer on showing Heidi support for the cover: “Heidi really wanted me there for backup. She was like, ‘This is a setup.’”

Heidi on first meeting Lauren at the Academy of Art in San Francisco: “We were the only blondes in the class. We were such. Good. Friends. A part of me just wants to go up and be like, ‘Hey, how are you?’ But the other part of me is so mad. . . . It’s like I’m the odd man out.”

Spencer on the Lauren-Heidi feud: “People love feuds. Who were Paris and Nicole before they weren’t friends? That’s when they became superstars. If Lauren and Heidi were friends, people wouldn’t tune in.”

To check out the The Hills article from Rolling Stone, visit RollingStone.com. This issue hits newsstands tomorrow, April 30.