Did you know Zac is best friends with this Hollywood actress?

This seems like a slightly odd pairing but we love it all the same!

Hollywood heart throb Zac Efron and funny girl Anna Kenrick are BFFs – according to Anna in her latest interview.

The actress spoke to InStyle over the week and told them all about their mountain hikes and BFF status.

During the summer the friends were spotted in Hawaii, hiking through Oahu, a top tourist spot on the island.

While this friendship seems to be out of the blue, Anna and Zac were filming an upcoming movie, Mike and Dave Need Wedding Dates, where they star alongside Adam DeVine.

In Anna's interview she was asked whether her and Zac are now besties, to which she replied, "Totally".

"You know, I'm just glad he could keep up with me because I'm so in shape, and he is so weak." 

 Mike and Dave Need Wedding Dates is due in cinemas in 2016.