Reality TV star Heidi Montag has separated from her husband, Spencer Pratt.

The couple's very public relationship has become increasingly bizarre in recent months, with Pratt admitting he had banned his wife from watching TV and using the internet.

Montag has also become estranged from her family and just weeks ago sought a restraining order against her mother, Darlene Egelhoff.

Over: Heidi Montag has separated from husband Spencer Pratt

'Heidi is looking to move out due to all the fake bad press that Spencer controls,' a spokesperson for the star told TMZ.

'She's tired of it and is looking for a place and wants to focus on her acting career.'

The announcement sheds light on 23-year-old Montag's latest tweet, which read: 'I am not Heidi Pratt, I am Heidi Montag.'

Montag, a self-confessed plastic surgery addict who underwent 10 procedures in one day in November, has been trying to carve out a career as a Hollywood actress.

She is due to make a small appearance in Jennifer Aniston's upcoming film, Just Go With It, and earlier this week posted an online audition tape for Transformers 3 in the hope of catching the attention of director Michael Bay.

Montag first became famous as Lauren Conrad’s best friend on MTV reality show The Hills.

They eventually ended up as enemies after Montag started dating Pratt, who didn't hide his disdain for Conrad.

The couple's tumultuous romance was chronicled throughout the show.

Focusing on her career: Heidi, pictured here with Spencer on the set of Just Go With It in March, wants to land more acting jobs

During a recent episode, Pratt, 26, said: 'I don't let her go on TV, no computers.

'The only thing Heidi does is read and write poetry and pray and pet puppies... She is logged out of The Matrix.'

They wed in Cabo San Lucas, Mexico, in 2009.

Pratt first proposed in 2007 but the pair split after he was caught cosying up with other women at a nightclub. They reconciled soon after.

Where it all began: The couple's relationship was chronicled on hit reality TV show The Hills