I have 2 lovely daughters from a previous marriage and they want to visit for Christmas but my wife says no.?

wow...hmmm. No clue, I love having children around, mine,his,theirs, the neighbors lol..so I don't understand anyone not wanting children around. First I would try talking to your wife, ask why she would rather the girls not visit for the holidays. Don't allow her to be evasive,these are your children and you have a right to see them whenever you can. I'm sure you don't wish to cause her undo stress if she's having a problem pregnancy, but you have a right as do your children. Will you be there all the time to help keep the children under control? If not offer to hire a nanny while the children are visiting. With a maid and a nanny she won't be expected to do anything,...maybe she feels she has a responsibility to tend to your girls and she is just not up to it. If she's insecure thinking maybe the children will bring about memories of time shared as a family with their Mother. In this case just keep reuring her this is not the case. (Even if it does) And it will :) The most important thing... your girls have to feel welcome, your wife needs to understand this and get over whatever fears,doubts,insecurities or whatever. Your children are only small for a short while, PLEASE don't waste one moment....you'll never get that moment back. And one day your girls will ask "why"....they may even grow to resent her and you. You don't want this to happen. Bring your girls home for the holiday's, if your wife has a problem so be it. I pray you can work things out. Ask her how she would feel if things were turned around an you refused to allow her children from another man to live with you or visit on holidays. One more thing, God forbid anything should ever happen to your X but this is the world we live in, "drunk drivers" and so on....If your wife dosen' want them around for a simple Christmas....what happens should they find themselves needing to live with you permanently? God Bless an Good Luck .....Happy Holidays :)