Jessica Simpson says her unborn daughter will play a big part in her wedding.

The singer-and-actress is expecting a little girl with fiance Eric Johnson and while they had planed to wed before she got pregnant, Jessica is now going to wait so the tot can be involved.

When asked if she had set a wedding date Jessica said: ''I want him to be my husband so bad. I do still want to wear the pretty gown so I have to wait.

''Now she'll just be in the wedding.''

While Jessica can't wait to meet her daughter, she admits she's is nervous about giving birth because she knows it's going to be painful.

She said: ''Labour is really going to hurt I have so much respect for my mom and all the women across the world.''

The blonde beauty - who was previously married to singer Nick Lachey - also revealed she is craving ''sl*tty brownies'', a three-layer desert which includes a layer of cookie dough and a layer of oreo cookie too.

When asked why they're called ''sl*tty brownies'', Jessica told talk show host Jay Leno: ''I don't know I guess a lot goes into them I guess.''