Britney Spears -- What's in Your Wallet?!

Britney Spears' conservators filed legal papers today explaining Britney's finances right down to the last penny -- and let's just say she's got a lot of pennies.

From March to December Brit blew $447,633.69 on security alone. Six months of household repairs and maintenance ran her $49,387.22.

Britney also spent $625,000 to pay Kevin Federline's lawyers, as ordered by the courts. In the docs, the payments are referred to as "Federline Fees."

K-Fed ain't doin too bad either -- from March to December, Britney kicked over $178,818.00 in child support payments.

Grand total expenses for Brit between Feb. and December -- $10,116,678.23.

But the best part: Britney definitely felt the Christmas spirit -- she spent $3400 just to hang lights.