The singer made the big reveal to her nine million Twitter followers, Tweeting: 'So happy + free to finally share this w you... Can't believe its here!'
The cover, shot by legendary photographer Nick Knight, shows the Lady fused together with a motorbike, complete with wild, wind-swept hair and heavily-lined eyes - adding a pop of colour with a red lip.
What do you think of Gaga going biker chick? Are you looking forward to hearing the new album? Let us know your thoughts below!