Leanne Zaloumis, who is charged with trespassing on Cowell's west London property, spoke only to confirm her name and address - Brownhill Road, Catford.
She was remanded in custody at West London Magistrates' Court for her case to be heard by a crown court judge.
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Around 88% of economists questioned by Ipsos Mori said leaving the EU would damage Britain's growth rates over the next five years.
Justice Secretary Michael Gove warned David Cameron that his failure to limit migration is 'corrosive' to public trust.
After a lively start to the long weekend with torrential, thundery downpours - a drier night.