Hayden Panettiere has been given a reason to smile after her cancelled country music drama Nashville was revived for a fifth season on a new network.

The TV series, which stars Hayden and Connie Britton as frequently feuding country singers, was axed by bosses at the ABC network last month (May16).

However, rumours suggesting the show had been being picked up by officials at another network began swirling shortly after the chop, while fans also launched a social media campaign in a bid to convince TV executives to bring Nashville back.

Now their wishes have come true as it will return to the small screen on Country Music Television (CMT) and streaming service Hulu.

All of the characters are expected to return to the show for the 22 new episodes.

The good news emerges during a tough time for Hayden, who recently announced she was heading back to rehab to seek further help in her battle with postpartum depression.

"Rather than stay stuck due to unhealthy coping mechanisms I have chosen to take time to reflect holistically on my health and life. Wish me luck!" the actress and singer said in a statement last month (May16).

Following her announcement, Hayden's co-star Derek Hough reportedly began sending her letters to show his support while she receives help in a Utah facility.

"He thinks she's a really great person," a source told OK! magazine. "They bonded while filming, and he wants to let her know that he cares. He's got a soft spot for her, and he doesn't like seeing her go through this."

"She needs all the encouragement she can get, and it brightens up her day to hear from Derek," the source added. "She couldn't be more grateful for his friendship."

The Heroes actress, whose character on the show also battled postpartum depression, welcomed her first child with fiance Wladimir Klitschko in 2014. Hayden first admitted herself to rehab in October (15), but last month (May16), it became clear she was still struggling with the condition.