Audrina Patridge might've lost Justin Bobby to boyfriend stealer borrower Kristin Cavallari, but rumor has it she's already moved onwards (and, some might say, upwards) to mohawked Glee star Mark Salling. So how official is this supposed coupling?

Well, so far, all we've got to go on are UsMagazine.com's reports that the two were "talking into one another's ear and laughing" at Wednesday night's Hot Hollywood party (psst, we think it's called "conversing") before "heading off into the night together."

Hmm. We've seen a million alleged celeb "relationships" turn out to be nothing more than a glorified rumor (ahem, ahem, K-Cav and John Mayer). Plus, y'know, there's the whole "We Want Him For Ourselves" factor. But we'd hate to let our petty jealousy -- er, skepticism! -- get in the way of running an "Are-they-a-cute-couple?" poll. So, here it is! Now make with the superficial snap judgments and tell us whether this rumored relationship has you feeling all kindsa Glee-ful.

Well, now that Brody Jenner's back with Jayde Nicole (and Kristin Cavallari's back to being single), it's time for K-Cav and Stacie to get outta this two-boy town -- and spend a drama-free weekend in Vegas, baby! At least, that WAS the plan ... 'til Justin Bobby showed up for a surprise visit.

Fortunately, K-Cav's a sucker for the grand romantic gesture and, before long, she and JB are sharing a hotel room locking lips and making sure word of their little Sin City adventure slowly trickles back to L.A. (and Audrina Patridge). But will their vacation fling lead to something more? Watch as K-Cav and Justin's fun night out quickly devolves into a high stakes morning after. Hey, that's what you get for waking up in Vegas...

Wednesday night, roomies (slash costars, slash coworkers slash joined-at-the-hipsters) Whitney Port and Roxy Olin got all dolled up and hit the party circuit in their red carpet finest. So how'd they avoid stepping on each other's toes? Simple: they stayed approximately three thousand miles apart. Yep, while Whit went West Coast wildin' at Us' Hot Hollywood party (along with Hillzies Stephanie Pratt, Kristin Cavallari and Audrina Patridge), Roxy held down the fort in NYC at the taping of the 2009 mtvU Woodie Awards.

Check out both gals' gorge going-out ensembles (BTW, is it bad that Whit's lacy white frock reminds us of the "doily" dress from Reality Bites?!) and tell us whether you're more in love with Roxy's loose locks/copper-colored wrap -- or Whitney's delicate ringlets/beaded baby-doll.

As the reigning smog capital of the world, L.A's pretty much the last place you'd wanna go to bone up on your astronomy. 'Course, if it's stargazing you're after, you won't find a better view on this side of the equator -- and last night, all the biggest/brightest stars of Tinseltown were out at Us Weekly's annual Hot Hollywood party.

So who lit up the room? Amid the usual melange of musicians, socialites and actresses (like Leona Lewis, Nicky Hilton and Eliza Dushku), Hillzies Kristin Cavallari, Audrina Patridge and Stephanie Pratt glimmered and shined in glitzy metallics, sparkly bangles and sexy corsets. Take a look at our Hills gals' shimmery red carpet style and let us know who you think had the most dazzling dress of the night!

Justin Bobby's always been a man of few words -- and last week, he said nearly all the wrong ones when he blew off Audrina Patridge (and told her he still had feelings for her arch nemesis, Kristin Cavallari). Fortunately, 'Drina dusted herself off, slapped a smile on her face and stopped by the After Show (via satellite) last night to explain what really went down at that awkward dinner with JB.

So was it as uncomfortable as it looked on TV? Actually, it was even worse! According to Audrina, Justin rambled on and on about K-Cav for almost THREE HOURS, prompting her to storm off (and him to leave Kristin that sketchy voicemail on last night's Hills). Find out whether 'Drina wants another word with Justin (Spoiler: they'll have one final showdown!), plus hear her put in her two cents about L.A. Candy, Jayde Nicole and Speidi's unborn child.

+ Watch the rest of The Hills: Live After Show, plus check out our ultimate breakup playlist and find out how we think the Jayde/Kristin showdown should've gone!

MTV stars tweeted up a storm again this week! So we've taken the best of the best and dished them out for your personal enjoyment. Find out who Paris Hilton really loves, hear Heidi Pratt 'splain why she's the next Rihanna and learn why Stephanie Pratt was hiding under the covers after a night out with her Hillzies.

Kristin Cavallari doesn't seem to regret kicking Justin Bobby to the curb. Instead of waiting by the phone for him to call (or send another hilarious joke text), she was out at da club, canoodling with Brody Jenner ... and getting into it with Jayde and her Playboy posse. And since she and Audrina Patridge aren't exactly besties these days ('member the birthday blowout?) K-Cav sez she found out about 'Drina getting dumped the same way the rest of us did: by watching last night's Hills!

So what was it like seeing her Hills rival get her heart broken? Last night, Kristin dropped by the After Show (via satellite) to discuss Justin's breakup bombshell, settle the Speidi score and let her fans know revenge isn't always sweet. Check it out -- then tell us whether you think K-Cav's giving it to us straight!

+ Watch the rest of The Hills: Live After Show, plus take our poll and help us decide whether Kristin's in it for love -- or for the drama!

You already know Kristin Cavallari and Audrina Patridge have the same taste in guys (Justin Bobby, Brody Jenner, anyone in a leather jacket), but did you know they're also on the exact same wavelength when it comes to accessories? Yesterday, both Hillzies hit the streets of West Hollywood in sporty ensembles -- shades, leggings, comfy tops -- and smiled big for photogs while juggling their keys, cellies and oversized bottles of H20!

Take a look at these L.A. ladies getting some much-needed hydration (water ... it's so hot right now!), and tell us who's got the best shot of landing the new (fictional, but totally plausible!) "Got Agua?" campaign. Bottoms up, girls!

Two weeks ago, Justin Bobby told Audrina Patridge he'd never find anyone as good as her. So you can imagine the surprise (and yes, the humiliation) she must've felt tonight, when JB told her he was still too hung up on Kristin to even THINK about getting back together with Audrina.

Wait, hold up a sec -- Kristin? As in Cavallari? As in the no-strings-attached chick who dated Justin a handful of times, bitched him out over a text, then seemingly dumped his ass for Brody? Yep, according to JB, those three weeks of noncommittal bliss meant more than his four (or five) year love affair with Audrina. Or at least that's what he wants her to think.

Our take? Justin had second thoughts after his emotional outpouring with Audrina (as guys are wont to do), but instead of being honest about it, he decided to pin the whole thing on her, as though she'd completely misread all the signals. And while we understand the change of heart -- without Kristin, the grass-is-greener philosophy doesn't exactly fly -- we think he could've softened the blow a bit (or at least pretended to care) when Audrina told him she wanted to give it another go as a couple.

+ Think Justin deliberately led Audrina on, only to break her heart for the umpteenth time? Or is he just an immature jerk who (still) doesn't know what he wants? Take the poll and tell us whether you think JB is a bad boyfriend -- or an all-around bad guy.

First, she battled it out with Lauren Conrad over Stephen Colletti. Then, she waged war with Audrina Patridge over Justin Bobby. Now, she's pushing Jayde Nicole's buttons (and getting pushed around by Playmates) over Brody Jenner. So what's Kristin Cavallari's deal, anyway? Is she always picking the wrong men? Or is she just more interested in the chase (or, in her case, the catfight) than the dudes themselves?

Here's what we know: Kristin's got the head-turning looks, the fun-loving personality and the sexy, confident, swagga that guys go gaga over. And yet, somehow, she always seems to end up chasing after the one boy she can't actually have. So what's really going on here? Well, either K-Cav's a master of self-sabotage (i.e. she's attracted to all the wrong guys), or else she secretly lurves the drama that comes with moving in on another girl's turf.

+ Think you've got K-Cav all figured out? Take the poll and tell us whether you think the tough-talkin' Hillzie's got a thing for boys with baggage -- or guys with girlfriends!