Katie Price described her marriage to cage-fighter husband Alex Reid as a "mistake" as she announced the couple's separation.
The glamour girl issued a statement saying she married Reid "too quickly" and claimed he "changed from the man I fell in love with".
She said: "Alex and I have had a number of difficulties over the past few months.
"I accept that these were in part caused by my marrying too quickly - we all make mistakes and this was one.
"However, Alex changed from the man I fell in love with and some of his behaviour became difficult for me to understand and caused issues."
The pair tied the knot in Las Vegas just 11 months ago.
Price, 32, said she supported Reid's ambition to attract more media attention, but added that his desire to promote himself "contributed to our alienation".
The reality TV star also said the couple had failed to resolve their differences because "the issues between us are too deep rooted".
Last night's statement went on to say Reid, 35, asked Price to delay announcing their split because he wanted more time to think, but subsequently posed for newspaper photographs with her son Junior in a gym.
Price denied reports she had discussed financial matters with her divorce lawyers, and said claims the announcement had been delayed so her film crew could capture Reid's reaction on camera were a "complete fabrication".
She added: "I am deeply upset that my relationship with Alex has failed but I know it is the right thing for my children and I that we separate.
"My children are my absolute priority in this and they are being shielded from what is happening."
The news is the latest twist in the colourful life of Price, who divorced her first husband Peter Andre in 2009.
Last month she was banned from driving for six months after she admitted speeding.