Is Kristin Cavallari just the victim of a Hills hit job?

Known for unabashed opinions and acting like a general bitch on the MTV reality show, which even promoted her return with the tagline “The Bitch is Back,” Kristin she’s a better person than she’s portrayed by The Hills.

The real Kristin does charity work, people! Gosh!

“If you asked my real friends, they would say I’m definitely not a bitch,” Kristin Cavallari proclaimed while hosting at the Liquid Pool Lounge in Las Vegas.

However, she does add that “I definitely stand up for myself, and I’m not not a pushover.” In other words … you f*%ked with the WRONG girl, dude!

THE BITCH IS NOT BACK: Kristin Cavallari says she’s a lot nicer than how she’s portrayed on The Hills … which is supposed to be a “reality” show, but who are we kidding.

Cavallari’s plans for life after The Hills’ final season, which premieres tomorrow, include helping those less fortunate via the One Kid One World charity.

“I was just in El Salvador, and we rebuilt this whole school,” she says. “It takes so little time, but it impacts these people for the rest of their lives.”

One thing she’s not interested in pursuing - a feud with Hills costar Spencer Pratt, who recently ripped her (and pretty much everyone else) on Twitter.

“I heard one little comment he made, but if that’s it, I’m fine with it,” Cavallari says. “He’s attacking everybody else. There’s so much else going on.”

So true.

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Paulina Porizkova is on record: she hates the new boobs of Heidi Montag and Kate Hudson.

What does this former super model and current attention monger think of Teresa Giudice’s recently-enhanced chest? Probably nothing, seeing how low down on the celebrity totem pole this Real Housewife of New Jersey ranks.

But Giudice is trying to change that. She’s featured in the latest issue of Steppin Out and tells the classy magazine she’s “more confident” about her post-surgery body.

“I did it just for me,” says Giudice. “My husband still loved me with my little boobies… We were married for nine years when I got them done. He still loved me the way I was… [Now] I feel so much sexier. Way sexier!”

The reality star returns to Bravo on May 3 when The Real Housewives of New Jersey premieres its second season. She says viewers will see a “much more sexual” individual, one whose sex life is “even better” than before.

Might they also soon see a much more naked Teresa in the pages of Playboy? Following her critique of Bethenny Frankel in that publication, this seems like a strong, nauseating possibility.

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Looks like Paris Hilton really is so over Doug Reinhardt.

That’s not too shocking, but what we didn’t expect was her rebounding with former boyfriend Jason Shaw. Yeah, we’re talking waaay former here.

The ho-tel heiress and the model were together for three years earlier in the decade and sources say each has always had feelings for the other.

This was pre-Paris Hilton sex tape, so essentially, pre-Paris Hilton.

As far as most fans are concerned, she didn’t exist before Rick Salomon hit it. Although we did unearth a few old school pics of her with Jason …

THE OLD DAZE: Paris and Jason were a cute duo.

Like Damon Thomas, who Kim Kardashian was married to before Ray J worked his magic from behind, Jason Shaw still remains a bit of an enigma.

But perhaps not for long. Last night, they were spotted having a cozy dinner at Woo Lae Oak around 10 p.m., and things are reportedly going well.

Sources say “Paris always loved Jason and cared about him deeply. When they were together she was a kid and not ready for such a commitment.”

The former twosome reconnected mere weeks after Paris’ recent split from Doug. “When Jason found out that she had ended her relationship with Doug, he was thrilled and made plans with her right away,” a source tells E!.

The two are taking it slow for now, but may give it another try. Here’s hoping they do. After a year-plus, Paris could certainly use a little action from someone less boring … and after Doug Reinhardt, there’s nowhere to go but up.

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As if his fall from grace weren’t complete, former presidential candidate John Edwards is accused of a shocking DUI cover-up by the National Enquirer.

Seems far-fetched, but at this point, we’d almost buy it.

The man has no credibility left, having repeatedly denied accusations by the same tabloid that he had an affair and fathered a child with Rielle Hunter.

Both of those rumors were 100 percent accurate.

It’s therefore hard to fully discredit reports that John was stopped by police after a boozy night of partying in March and weaseled his way out of it.

Just when you think John Edwards’ image couldn’t possibly get worse …

“John was the passenger in the car of an unidentified woman he picked up at one of the local bars,” an insider said. “John had been drinking a lot of wine and asked the woman to drive. She apparently had a couple of drinks herself.”

Certainly not surprising that he was out on the singles scene.

On the way to possibly create another John Edwards sex tape (our theory, not the Enquirer’s), the cops c*ck-blocked John by pulling the car over.

After she “swerved the car a bit,” Edwards, who wanted to avoid trouble, reportedly used his Southern charm - and possibly money - to hush it up.

No word if Andrew Young said he was behind the wheel instead.

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Dear Justin Bieber fans:

We know this young star is very cute and has a pretty good voice. But he’s just a singer. Seriously, he hasn’t cured a single disease or come up with financial regulation that will help ease the ongoing economic crisis.

It’s necessary to pass along this message because people are starting to get seriously injured as a result of the mass hysteria surrounding Bieber. Even worse: police are shutting down his concerts!

Both these developments took place in Sydney, Australia over the weekend, as Justin was set to sing on stage for a morning TV show. But the performance was canceled after thousands of unruly fans created a security nightmare and at least 10 girls passed out.

Fans camped out overnight for the event. By 3 a.m., almost 4,000 people had gathered. When they heard Bieber might be in the vicinity, they rushed the stage, broke down barriers and generally acted like brides at a wedding gown sale.

Not even Tiger Woods acts this out of control inside a Las Vegas night club.

As news of the cancelled gig spread, Justin Tweeted: “I love my fans… and I am just as disappointed as everyone else with the news from this morning. I want to sing for my fans,” adding in capital letters:

“I WANT TO MAKE THIS CLEAR…I DONT CANCEL…I WOKE UP THIS MORNING TO THE POLICE CANCELING THE SHOW FOR SAFETY REASONS.”

Bieber then wrote he was “beyond grateful…for such an amazing warm welcome.”

We’re sure he is, but perhaps Justin should also send a message to his followers: Chill the eff out! I appreciate the support, but I have a bowl cut and I sing songs other people have written for me. That’s about it.

Justin Bieber fans react to the news that their utter insanity caused a performance by their singing god to be canceled in Australia. [Photos: Splash News]

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