People.com Celebrity Zac Efron Smolders on Hawaiian Hike with Anna Kendrick (PHOTO) By Wade Rouse Published on May 27, 2015 03:00 PM Share Tweet Pin Email Photo: AKM-GSI Hawaii got even hotter over Memorial Day weekend when Zac Efron showed off his guns during a hike with Anna Kendrick and Aubrey Plaza. On location in Hawaii, the trio are filming Mike and Dave Need Wedding Dates and decided to get a little exercise by climbing Oahu’s Lanikai Pillbox Trail. While Efron, 27, wore a tank top and backwards baseball cap and carried a backpack, Kendrick, 29, looked Pitch Perfect in aquamarine shorts and a white, long-sleeve athletic top. Plaza, 30, opted for athletic tights and wrapped a plaid shirt around her waist. RELATED VIDEO: See Zac Efron’s Changing Looks Efron also shared a shot from the hike with fans on Instagram on May 25. “Trailing up the military pillbox hike in Hawaii and remembering our troops. Thank you for your service #Memorialday,” he captioned the photo.