Hayden Panettiere and fiancé Wladimir Klitschko are now officially parents as the couple welcomed the birth of their baby girl Kaya Klitschko on Tuesday, Dec. 9.

The Nashville star and the 38-year-old boxer first broke the news that they were expecting back in May of this year in a unique way, with the 25-year-old mommy-to-be announcing it while doing the ALS ice bucket challenge.

"I accept my ALS Challenge," Panettiere said in an Instagram video posted by Nashville guest star Derek Hough. "I renominate Kacey Musgraves — you're not getting out of this, Wladimir Klitschko, and my unborn child."

Prior to that, the Heroes actress was ecstatic about the prospects of motherhood over a year ago and couldn't contain her excitement.

"I've lived a very big life, and I don't feel my age, and I feel like I was born to be a mother. Sometimes people speak about [having kids] like, 'Your life ends—you're never going to be able to do anything again!' And I'm like, 'What are you talking about?'" she said in the May 2013 issue of Glamour. "Motherhood is the most beautiful, exciting thing, and there's nothing that I feel like I can't accomplish while having children in my life."