Fresh off a trip to Australia, Kellan Lutz is back in LA, enjoying the Hollywood heat and looking HOT while doing it!

The Twilight star spent time with girlfriend Sharni Vinson Down Under, and spoke of his love for the country: "I like to wake up with the sun around 6.30. I'll just go for a run, drop and do some push-ups, run some more, do lunges, grab the rings, and do pull-ups. I love exercising outdoors, like down at the beach, especially in the morning. Then I'm happy for the rest of the day, because I've done something good for my body."

Good for his body, indeed!

Car trouble can always be a bummer and it looks like Kellan Lutz is experiencing that first hand!

The hunky Twilight star was caught peeking under his hood today in LA to see what's what (we're guessing a radiator issue, hence the cup). While we're sure he knows a thing or two about cars, there's nothing wrong with getting a little professional help!

For someone who's working on his car, he doesn't dress the part at all! Maybe he's wearing the latest from his new clothing line Abbot + Main?

When it comes to casual yet sophisticated style, Kellan Lutz always hits it right on the head!

The Twilight hottie, who was happy to greet his fans of all ages, showed off Dylan George's ready-to-wear menswear collection, Abbot + Main ... in which Kellan designed with DG founder Danny Guez.

We're lovin' those jeans!

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Kellan Lutz muscles his way into the DJ booth while hosting a party for the Dylan George and Abbot + Main Fall 2012 collections at Chateau Nightclub & Gardens at Paris Las Vegas.

The Twilight stud, sporting super short hair, will be appearing alongside Sports Illustrated's cover girl Kate Upton in the Dylan George and Abbot Fall '12 campaign launching this May.

Talk about sexy overload!

Click thru to see more of Kellan in Sin City.

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Kellan Lutz looks sexy with a head full of curls, a shaved head ... and yes, even a mohawk! The Twilight hunk just Tweeted the above photo of his newly shorn 'do.

Lutz also Tweeted the following message:

"Movember equals MoHawk month right, or was it Mustache? ... Out with the old and in with the new, good bye dark hair it's been fun."

One request, Kellan. Next time, can we please get a full body shot?

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Kellan Lutz rocked sexy black specs while on the maroon carpet at Nylon magazine's "Guys" party. He's the mag's cover boy!

The Twilight hunk, wearing a killer striped sweater, joined a slew of celebrities at The Beverly in Los Angeles. ... like Jenny McCarthy. We're loving her oh-so-sexy Christian Louboutin boots!

Also at the party ... designers Dylan George, Abbot + Main and Luna Rosa Tequila.

We spotted Kellan Lutz at the Grove a few minutes before he taped a segment with Extra on Tuesday, and the Twilight hunk covered up his handsome face with a beanie and shades. Of course, he did flash us his sexy smile, so all is forgiven...

Kellan is busy promoting Immortals AND Breaking Dawn, so thankfully we'll get to see more of his deliciousness in the next few weeks!

Kellan Lutz sat down with The Advocate to chat about his buff bod, flirting and Twilight, and the hunky star reveals some surprising facts about his roommate preferences and how he gets girls.

On gay rumors:

"I don't Google myself, but I've heard that people think I'm gay. I've heard it all. See, I don't really go after girls. Most of the girlfriends I've had have come after me. So it's really funny when girls get offended because I don't hit on them. They'll transform their insecurity into, 'Oh, that makes sense, because I heard you're into guys and have a boyfriend.' I'm like, 'Seriously? That's your tactic to get me to like you?' There will always be rumors, but I know who I am."

"I love a topless run by the beach, and it does suck when paparazzi [are] there. It's like, 'F***, do I keep my shirt on because I don't want to be shirtless in another magazine?' I don't want to be known as the guy who always takes his shirt off. ... I've done a lot of photo shoots lately for the press coming up with Immortals and Breaking Dawn, and every photographer wants to get the topless shot. We've really had to be choosy and not do that for every magazine. I've actually been trying to keep my clothes on more."

"Honestly, I'd prefer to live with gay guys. They're the cleanest, and they just take care of stuff. Because I'm always away, coming home to a clean house means a lot to me. Trust me, I've lived with a lot of roommates, and straight guys are just kids who don't pick up after themselves."

Click after the jump to read the rest of his interview!