Just like us, the super-dooper rich like to boogie down to their favourite music on their birthday.
The only difference is, they can shell out for a live performance - by the original artists.
A survey has revealed just how much they are willing to pay stars such as the Rolling Stones or Christina to appear at private parties.
No matter how busy, or how wrinkly, the singers all seem to have their price.
Top of the list for party fees are the Eagles.