Zac Efron shows off his bulging guns while filming a scene for his upcoming film Neighbors 2: Sorority Rising on Thursday (September 10) in Atlanta, Ga.

The 27-year-old actor was joined by his co-stars Seth Rogen and Rose Byrne.

PHOTOS: Check out the latest pics of Zac Efron

The day before, Rose was seen shooting solo on set of the movie, which also stars Chloe Moretz, Dave Franco, Selena Gomez, and more. We can’t wait to see it!

35+ pics inside of Zac Efron filming Neighbors 2: Sorority Rising in Atlanta… More Here! »

Zac Efron steps out of his trailer to get ready for a scene on the set of Neighbors 2 on Tuesday (September 1) in Atlanta, Ga.

Joining the 27-year-old actor on set that day were his co-stars Dave Franco and Seth Rogen.

Zac‘s latest movie We Are Your Friends opened in theaters this past weekend and unfortunately didn’t fare too well. The film grossed just $1.77 million in its first three days and failed to crack the top ten.

25+ pictures inside of Zac Efron on the Neighbors 2 set… More Here! »

Justin Bieber is not giving up!

The 21-year-old entertainer continues to reach out to Seth Rogen to participate in his upcoming Comedy Central Roast.

In case you don’t remember, Seth publicly called Justin “a piece of sh-t” last year. And now that Justin is seemingly turning over a new leaf, he wants Seth to make fun of him to his face.

In case you missed it, check out the first and second promos for the Roast!

Click inside to read the rest of Justin Bieber‘s tweets to Seth Rogen… More Here! »