updated 03/20/2012 AT 2:40 PM ET
•originally published 03/20/2012 AT 12:30 PM ET
“At this point, I’m really ready,” she tells PEOPLE. “I’m not sleeping very well; she moves all the time. I had a great pregnancy, but I’m ready for it to be over!”
“It’s so much baby and so much amniotic fluid, it’s crazy,” the Fashion Star mentor, 31, continues. “If we have a 10 pounder, pray for me!”
On Sunday, Simpson got together 75 of her nearest and dearest to help her celebrate her daughter’s impending arrival with a shower set up to look resemble the carnival from one of her favorite children’s books at a soiree organized by celebrity event planner Mindy Weiss.