Jennifer Hudson is feeling the pressure from her young son to have another child because the toddler quizzes mom daily about giving him a baby sister.

The Dreamgirls star, 30, admits she would love to expand her family, but it's little David, Jr., who turns three in August (12), who is really turning up the heat.

She tells Life & Style magazine, "It's always been my dream to have a boy first and then a little girl so he'd be the big brother. I want one so bad! (David, Jr.) says, 'Mummy, I want a baby sister,' every day."

However, Jennifer Hudson is having to rethink previous plans to get pregnant when David, Jr. reaches the age of four because she's fast running out of time - and she's not quite ready to become a new parent all over again.

She says, "Give me another year or two. I used to say when David Jr. is four, but he's almost four now so maybe five or six because this is coming too soon!"

In the meantime, Jennifer Hudson has another big date to prepare for - she is busy planning her impending nuptials to her wrestler fiance David Otunga.