BooBoo Stewart suits up nice as he attends the premiere of The Twilight Saga: New Moon held at Mann’s Village Theater on Monday night (November 16) in Westwood, Calif.

The 15-year-old actor will make his debut in The Twilight Saga in the third film, Eclipse as Seth Clearwater, who is the only shape-shifter that has no problem with the vampires.

BooBoo was accompanied by his lil’ sis Fivel Stewart.

The Twilight Saga: New Moon hits theaters on Friday, November 20th.

10+ pics inside of BooBoo & Fivel… More Here! »

Check out this hot shot off BooBoo Stewart for Lunchbox Magazine’s upcoming issue!

The 15-year-old actor plays Seth Clearwater in the upcoming The Twilight Saga: Eclipse, which just wrapped filming in Vancouver, Canada.

Be sure to check back soon for quotes from BooBoo’s interview and peep the vid below. BooBoo even shows off his martial arts skills!

Bigger pic inside…

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BooBoo Stewart gets shaded from the trees as he and lil’ sis Fivel leave an audition on Monday afternoon in Venice, Calif.

The duo seem to be big fans of the Fila brand. BooBoo, 15, is wearing an Essenza Jacket while Fivel, 12, is toting around one of their bags.

Fivel is also wearing a Lyric Culture sweatshirt that says, “Do You Think I’m Sexy?”

BooBoo currently stars as Seth Clearwater in the upcoming The Twilight Saga: Eclipse. The second film in the series, New Moon, hits theaters on Friday, November 20th.

ARE YOU EXCITED to see New Moon?

Debby Ryan and Eclipse star BooBoo Stewart pose for a pic at Mattel and Children’s Hospital UCLA’s “Party On The Pier” on Sunday afternoon (October 18) in Santa Monica, Calif.

The 16-year-old Suite Life actress tweeted that she even got to run a booth at the event which promotes children’s health and raises funds for the hospital to continue care for special patients and their families.

The actors and celebrities who were in attendance signed autographs and played tons of games for the families and patients there.

BooBoo Stewart and big sis Meagan are all smiles as they arrive at the Famous Cupcakes Launch Party in Beverly Hills on Wednesday night (October 7).

The 15-year-old actor dished to J-14 mag how he snagged the role of Seth Clearwater in the upcoming The Twilight Saga: Eclipse.

BooBoo shared, “I was the last one to audition for the part and when I got the call we [my family] were all screaming and jumping.”

BooBoo Stewart flirts with the cameras as he attends A Smile For Every Child Gala held at the Shangri-La Hotel on Thursday night (September 10) in Santa Monica, Calif.

The 15-year-old actor recently caught up with Popstar! and dished all about his upcoming role as Seth Clearwater in The Twilight Saga: Eclipse. He shared, “Seth is the type of guy who can just walk into the room and make you happy and smile. He seems like an all-around good guy; he’s a peacemaker.”

BooBoo continued, “To prep for Twilight, I’m not cutting my hair. I’m just letting it grow out and I’m going to the gym like every day. My mom is a personal trainer so she’s working me out.”

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Eclipse star BooBoo Stewart poses next to big sis Fivel Stewart as they attend the official launch of New Disney & Muppet Myzos held at the Fred Segal boutique on Saturday afternoon (August 22) in Santa Monica, Calif.

The 15-year-old actor dished to Popstar! recently about his upcoming role in The Twilight Saga flick.

Popstar! tweeted, “BooBoo says it was a fan who told him he should try out for the role of Seth Clearwater that first got him interested. He doesn’t head over to the set until mid-September but he’s actually known Taylor Lautner since he was 10 years old.”

BooBoo Stewart spilled the beans!

The 15-year-old actor, who was just cast as Seth Clearwater in the third movie, Eclipse, revealed to Access Hollywood that there would be five Twilight Saga films.

Boo Boo shared, “I heard there’s going to be three more movies: Eclipse, Breaking Dawn, and there should be one more.”

Follow BooBoo on Twitter @mammarazzi1!

TELL JJJ: Are you ready for FIVE Twilight movies?