While thousands in New York and New Jersey struggled in the devastating aftermath of Sandy, some celebs couldn’t stop the party. Giuseppe Cipriani and son Ignazio threw a lavish bash at Cipriani 42nd Street on Wednesday night, as Halloween was canceled across the region and downtown Manhattan remained cloaked in darkness. Stars including Leonardo DiCaprio, Russell Crowe, Dita Von Teese, Jay-Z and Beyoncé joined the bash, which Cipriani reps say went on until well after 5 a.m. and was not for charity. One guest told us, “The Ciprianis put a lot of effort into the party, bringing in DJs who...