Heidi Montag has reportedly signed up for reality TV show 'Celebrity Rehab'.

The former 'Hills' star - who famously underwent 10 cosmetic surgery procedures in one day and has complained about back pain after having her chest enlarged to a G-cup - is said to have joined season five of the show, which is hosted by Dr. Drew Pinsky and sees stars get help for their problems, which are usually drink or drug related.

A source told X17: "Heidi was dropped off at the house two days ago by a friend, not Spencer [Pratt, Heidi's husband]. She is going to be on season five with the rest of the cast, but they are making her share a room with the 'Real Housewives of DC' star Michaele Salahi and she is throwing an absolute fit about sharing with her. There is major drama going down about where Heidi has to stay."

It was previously revealed that Lindsay Lohan's father Michael Lohan - who has battled addictions in the past - has signed up to work on his Anger Management issues.

A source said: "Michael is absolutely 100 per cent sober. He hasn't been using drugs or alcohol, but he is being treated for anger management issues. Michael has tremendous admiration for Dr. Drew, and was given this opportunity to better himself, and he took it. Michael wants to deal with his anger issues in a controlled environment."

Other cast members include actress Bai Ling, 'Baywatch' star Jeremy Jackson and New York Mets pitcher Dwight "Doc" Gooden.