Britney Spears spends almost $10,000-a-month on electricity, gas and water at her home in Calabasas, California, according to new court documents.

The pop star's handlers have filed details of her expenditure and outgoings for 2010 as part of her ongoing conservatorship case - and the legal papers, obtained by TMZ.com, make for interesting reading.

As well as assets totalling over $32 million - two years before she signed a $15 million deal to become a judge on American talent show The X Factor - the documents list Spears' annual child support and care as $303,673, her cleaning expenses ($27,265) and her personal grooming and wardrobe ($61,295).

In 2010 she paid over $59,000 in automobile expenses and $19,000-per-month on rent.