The special occasion came as a shock to invited guests, who believed they were simply being invited to a party.
Other A-list well-wishers included Chelsea Handler, Jason Bateman, Ellen DeGeneres and Portia de Rossi and Emily Blunt and husband John Krasinski.
The happy couple's wedding rings were created by jewellery designer to the stars and Jennifer's friend Jennifer Meyer, the wife of Spider-Man actor Tobey Maguire.
Guests were entertained by Sia, who sang her hit 'Chandelier', and dined on a lavish feast of chicken, fish, sausage, fettuccine carbonara with pork and mostaccioli pasta with red sauce.
A source told Us Weekly magazine: "It was really, really good. The cake was delicious!"
- Bang! Showbiz
