He may be Austrian but that doesn't mean Arnold Schwarzenegger can't have some traditional German fun!

The actor/governor/cool dude slipped into a traditional leather lederhosen to celebrate the fun-filled Oktoberfest in Munich, Germany with girlfriend Heather Milligan. We are kind of diggin' Arnie in this garb!

Earlier in the day, Arnold and Heather were spotted earlier in the day riding bikes around town. The happy couple looked like they were having a blast together!

The couple went around town all day, chatting with locals, eating some authentic German grub, and putting back the beers. The 69-year-old and his girlfriend of four years really seem to be enjoying their annual trip to the Schuetzen Festzelt!