|Drew Barrymore and Will Kopelman|
A source told In Touch Weekly magazine: "Will likes to throw parties. So he wants a huge celebration, whereas Drew would rather host a quiet ceremony on her gorgeous estate in Montecito, California."
The 37-year-old actress has promised art consultant Will that if he agrees to a smaller wedding they can have a celebratory party after she gives birth.
The source added: "Drew told Will that he can plan the party of all parties once she's not pregnant anymore, so that she'll be able to enjoy it, too!"
Drew - who has been wed twice before to bar owner Jeremy Thomas for just two months and comedian Tom Green - has apparently settled on a Chanel dress for the big day.
Drew and Will, 34, are reportedly expecting a daughter.