Now, I know kids' birthday parties can be pricey -- but this bash was way over the top! (Although, I suppose if celebs like Kate Beckinsdale and David and Victoria Beckham attended my party, I'd be inclined to spend a lot, too.)
So, what exactly does $15,000 get you?
A bouncy castle, three birds, a face painter, a balloon artist, and roaming superhero characters were all on hand to entertain Kingston's guests.
Refreshments were also top notch: There was a cotton candy machine -- cool! -- and a lemonade stand, as well as burgers, hot dogs, tacos, quesadillas, French fries, chicken fingers, and, of course, birthday cake.
I don't know about you, but that sounds like the best 4th birthday party EVER. Who knows what's in store when the couple's other son, Zuma, turns 2 later this summer!
What's the most you ever spent on a kid's birthday party?