Jonah Hill celebrated his 31st birthday with a dinner that included Leonardo DiCaprio, Mary-Kate Olsen and, naturally, a mariachi band.
The “22 Jump Street” star and his pals gathered at Smith & Mills in Tribeca on Saturday for an intimate dinner.
A mariachi band appeared to serenade the birthday boy.
“Jonah was shocked,” a source told us, “but he laughed about it.” Guests danced while the band played “Feliz Navidad.”
Later, Bradley Cooper, Tobey Maguire and Michael Cera dropped by.