Bruno Mars will sing at your child's party. For a small fee. And when I say small, I actually mean huge.

This story comes to us via the New York Daily News.

The Grammy winner has been hand-picked by New York City-based Russian oligarch Len Blavatnik to perform songs at his daughter’s bat mitzvah. She’s a huge fan of the singer, who had better come ready with a long set list, because he’s getting paid per song, Confidenti@l can exclusively reveal.

“He is getting $250,000 per song and is planning to sing five songs,” a source tells Confidenti@l.

Celebrities performing at bar mitzvahs and other types of parties like sweet 16's are nothing new among the rich and famous. MTV has made a successful series of it, that I have to admit, I have seen and enjoyed.
Check out this ep with P-Diddy's son Justin planning the details of his bash that will cost hundreds of thousands, if not millions. He discusses with whom he should walk in (Kim Kardashian or Nicki Minaj) and what artist he will have perform.
At these parties, celebrities and artists are used to being paid their rate, which is never low, for brief appearances.