Isn't she lovely! 25-year-old actress Hayden Panettiere and her fiancé Wladimir Klitschko released the first photo of their baby girl, Kaya Evodokia. The couple posed for a photo shoot with their newborn for People magazine's January issue.

Panettiere, star of ABC's "Nashville, gave birth to her first child on Dec. 9. The actress told People that she's just recently got her first full, uninterrupted night of sleep after her soon-to-be mother-in-law babysat.

"Wlad's mom was desperate to take the baby for a night," she said. "She looks like she didn't get much sleep, but I feel well-rested!"

Panettiere said adjusting to motherhood has been "a surreal experience and so out of body" but she absolutely loves it.

"You're suddenly looking at this little thing like, 'Oh, that was you in my belly this whole time," Panetierre said. "[We're] just getting to know her."

The former "Heroes" actress admitted that she's still recovering from delivery and trying to figure out her post-baby body.

"I'm limping around. I'm still trying to figure out what [pregnancy] has done to my body, how it's changed it. What's temporary and what's permanent," she said, laughing. "I feel like an 80-year-old woman trying to go down the stairs, you know, please tell me this is temporary. But I know some things will never be the same again."

Regardless, Panettiere couldn't help gushing about baby Kaya, telling People that she has a very sweet daughter.  

"She's really so sweet. I'm sure that's the way it's meant to be, because when they are putting you through the ringer you're like, 'You are so lucky you're cute!'"