Looks like Olivia Mead will be able to afford her Mexican walking fish and jewelry-encrusted bass guitar—lots of them, in fact.

Mead, the "secret daughter" of the late Australian billionaire Michael Wright, became a minor Web sensation in early February after demanding more from her father's estate, worth $3.1 billion Australian dollars ($2.4 billion). She submitted to the court an exotic shopping list of her demands, including a AU$250,000 diamond-studded bass guitar and AU$2,014 a year to keep a Mexican walking fish.

In a surprising decision, the court Thursday awarded Mead AU$25 million (about $20 million)—more than twice the amount Mead was requesting from the court.

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"The starting point in reaching that conclusion is the size of the estate," Master Craig Sanderson said in his judgment. "The deceased had a vast fortune and he was in the fortunate position of being able to provide for all parties who had a claim on his bounty."