ARMED police were sent to Simon Cowell's home after a woman allegedly broke in wielding a broken brick.
Leanne Zaloumis, 29, is charged with trespassing on the music supremo's west London property before smashing his bathroom window and hiding in his walk-in wardrobe.
The defendant, who appeared in the dock on Monday with unkempt hair and a baggy grey sweatshirt, is accused of shouting at Cowell and hurling items at his bathroom window while standing on a roof outside.
Police arrested her at the property after being called by staff, prosecutor Paul Mitchell told West London Magistrates' Court.
After she was arrested in a wardrobe of the property, officers found blood marks in the bathroom. Cowell had been watching television in his bedroom when he heard a "loud bang" coming from his bathroom, prosecutors claim.
Zaloumis was taken to Notting Hill police station after being found in Cowell's mansion, the charge says.
The 52-year-old X Factor judge called his staff and was taken back to his bedroom during the incident at around 10.30pm on Saturday night.
The charge against Zaloumis, read out in court, said she intended to "inflict grievous bodily harm upon a person therein and at the time of committing the said burglary had with you a weapon of offence, namely a broken house brick.
She spoke only to confirm her name and address - Brownhill Road, Catford - as she was remanded in custody for her case to be heard by a crown court judge.
Zaloumis stared downwards and showed no emotion during the eight-minute hearing.
Zaloumis will appear again at Isleworth Crown Court on June 12, District Judge James Henderson said.
Cowell was not among the packed public and press gallery.