Hayden, 24, plays pop/country singer Juliette Barnes in the show and it has been revealed that in series three Juliette will be pregnant.
It is not yet known who the father of Juliette's baby is. At the end of series two, Juliette cheated on her boyfriend Avery (played by Jonathan Jackson) with Jeff Fordham (played by Oliver Hudson), the head of her old record label.
However, they're not the only two possibilities, as Hayden recently said that she'd like to see her character get back together with former flame Deacon (played by Chip Esten).
"We were together so much for the first year," she said. "And when you get to know somebody that well as an actor, it allows you to really delve into things in a way that is very free and real and raw."
It was revealed in May that Hayden is expecting her first child with her fiancé Wladimir Klitschko.
Wladimir has since spoken about his joy at becoming a father.
"When you're going to become a father or a parent, your life is going to change," he told E! news. "So I look forward to having my life change for the good.
"I heard, just recently, somebody said, 'You don't know what love is until you have your first baby, then you know what love is.' So I think I know what love is, but I look forward to getting more knowledgeable about that."
He also sang Hayden's praises, saying: "She's an amazing person and I'm more than sure that she's going to be an amazing mum."
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