The broody singer - who is engaged to NFL player Eric Johnson and has spoken of her desire to have kids with him - admitted on her twitter page that she had a dream about having a son who she bizarrely named after The Rock band fronted by Jack Black.
She wrote on the micro-blogging website yesterday (13.03.11): "Dreamt that I had a son named Tenacious D... That was a strange one."
The 30-year-old blonde recently denied she is already pregnant but said she was excited about the prospect of starting a family.
She said: "I definitely see myself having a family with Eric, so that's exciting to think about."
She said: "Obviously I'm looking forward to having more grandkids. Bronx is the love of my life."
Asked if she would prefer boys or girls, she added: "I'll take anything I get. I'm not picky!"
Jessica and Eric got engaged in November but haven't set a date yet.
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