Hugh Bonnevillehas left fans speechless after showcasing the full extent of his phenomenal weight loss journey.

MORE: Downton Abbey star Hugh Bonneville reacts to major TV show news 

The actor, who is best-known for playing Robert Crawley in hit period drama Downton Abbey took to social media earlier this week to share a photo of himself after a much-deserved staycation after wrapping up the filming on the second feature film.