Jessica Simpson doesn't want to have any more children.The 'Fashion Star' mentor - who has a 10-month-old daughter Maxwell and is pregnant with her second child with fiance Eric Johnson - is no longer planning to have a third child because she thinks two will be "a lot of work".The 32-year-old singer told Ryan Seacrest on his KIIS-FM radio show on Wednesday (06.03.13): "I really hope that it stops. I think originally I had wanted three [kids] and now that I have one and another one on the way, I feel like I could stop here. It's a lot of work. Obviously it pays off and it's totally worth it, but it's a lot of responsibility."But the blonde beauty joked that she wouldn't be surprised if she falls pregnant again, saying: "Accidents do happen!"The Weight Watchers spokesperson is exhausted from juggling motherhood and her pregnancy.She said: "Maxwell's a really good sleeper. For me, right now, the only reason parenting is a little bit hard is because I'm so tired from this pregnancy. Maybe when I have two I'll be less tired, but I don't know about that."The 'Dukes of Hazzard' star is looking forward to moving into her new home, which she bought from Sharon Osbourne in January.She said: "I'm excited about it. We get the keys this week, actually.Â It's on 2.5 acres, which will be nice. I feel like I grew up in Texas with so much land and you just don't get that in Los Angeles, so to have that will be nice."