How much is too much to spend on a child’s birthday party and how many kids should you invite?

We’ve become accustomed to posts about the Kardashian/Jenner family throwing lavish and eye-wateringly expensive birthday parties for their children, but they’re not alone in treating their offspring to the best money can buy. In August, Madonna threw an elaborate and undoubtedly pricey birthday bash for her twin daughters Estere and Stella as they turned 12, complete with horse riding, water slides, ice-cream trucks and the opportunity for guests to customise clothing and try various arts and crafts..