Hayden Panettiere feels like an "80-year-old woman" after childbirth.

Hayden Panettiere  has joked she feels like an "80-year-old woman" after childbirth battered her body, and she is still trying to work out what lasting effects pregnancy will have on her.

Hayden Panettiere has joked she feels like an "80-year-old woman" after childbirth battered her body.

The 25-year-old actress gave birth to her and her fiance Wladimir Klitschko's first child, Kaya, on December 9, but the blonde star admits her body is still feeling the effects of her pregnancy and she is trying to work out which parts of her body will return to normal eventually and which won't.

She said: "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.

"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."

Hayden admits her and the 38-year-old boxer's child is putting her "through the ringer" with her "insatiable appetite" but admitted she doesn't mind because her bundle of joy is so adorable.

She said: "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!' "

Hayden and Wladimir are enjoying getting to know their little one but the 'Nashville' star was quite glad of a rest when the fighter's mother insisted on taking care of Kaya for a night.

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

"[It is] such a surreal experience and so out of body. You're suddenly looking at this little thing like, 'Oh, that was you in my belly this whole time.'

"[We're] just getting to know her."

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