She will turn 40 in April this year and is keen to have a "high quality" spread after seeing the supermodel go all-out on her milestone birthday last weekend, reports contactmusic.com.
"She's not holding back at all. Victoria was actually slightly dreading it before Christmas, but she has since been inspired by Kate Moss," said a source.
The former Spice Girl wants to host a bash in London and Los Angeles so that all of her showbiz friends can attend it. She is planning on spending a hefty 100,000 pounds to entertain her guests.
"Mossy embraced the milestone birthday last week, and now Posh wants to do the same," added the source.