The 39-year-old designer is keen to put on a ''high quality'' spread - which will take place in April - after watching the supermodel go all-out on her milestone birthday last weekend.
A source said: ''She's not holding back at all. Victoria was actually slightly dreading it before Christmas, but she has since been inspired by Kate Moss.''
The former Spice Girl wants to host a bash in London and Los Angeles so that all of her showbiz friends can attend and is planning on spending a hefty £100,000 to entertain her guests.
The source explained: ''Mossy embraced the milestone birthday last week, and now Posh wants to do the same.''
The brunette beauty has already arranged for Gordon Ramsay to prepare the party food, but she's keen to spend most of her budget on buying posh booze.
The source told the Daily Star newspaper: ''She wants it to be one to remember with everyone she knows there. Gordon Ramsay has agreed to organise all the food for her too. But Vic plans to spend most of the party money on high quality alcohol.''
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