The former glamour model - who split from her husband of three-and-a-half years Peter Andre last month - is struggling to cope with the end of her marriage and has worried friends with her increasingly erratic behaviour.
A source said: "Katie's gone into a complete meltdown this week. All of a sudden this became a reality.
"She's hit rock bottom. She doesn't know what to do with herself. Her behaviour is all over the place. She's been sobbing and attacking anyone she can."
Katie, 31, is said to be convinced Peter, 36, will try to win a chunk of her estimated £40 million fortune during their divorce and is upset with his refusal to speak to her over the phone.
top model headlines, glamour swimsuit hot,
