The Black Eyed Peas star, who is expecting a boy with Duhamel, is preparing for the pre-birth celebration which will be thrown by her agent Sean Patterson and fashion designers Dean and Dan Caten, reported New York Post.
According to reports, a number of A-Listers have been invited to the event, these include TV star Kelly Osbourne, dancer Julianne Hough, director Ryan Murphy and actors Neil Patrick Harris and Jesse Tyler Ferguson.
In addition, fashion designer Marc Jacobs and American stylist Joe Zee have confirmed their attendance.
"Everyone is saying, 'You better sleep now because you're not going to get any when the baby's here', and 'Oh, your life is over after that', and 'Oh, it's the most beautiful thing ever, but it's tough," Duhamel said.