Jessica Simpson says it's hard wearing high heels while she is pregnant.

The blonde beauty - who is expecting a little girl with fiance Eric Johnson - admitted wearing the raised footwear while expecting a little one means there is ''a lot of weight to carry''.

Speaking on Monday's (12.03.12) 'Tonight Show', she said: ''I'm wearing six-inch heels today, and it's a lot of weight to carry on six inches.''

As well as the pain she is now suffering from by wearing heels, the singer-and-actress admitted she is not looking forward to going through ''really painful'' labour when the time finally comes.

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

Jessica had previously planned to tie the knot to Eric before she got pregnant, but the couple have decided to wait until their baby is born.

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.''