Hayden Panettiere's Big Baby Bump on Display in Skimpy Bikini!

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Whoa, baby!

Pregnant Nashville star Hayden Panettiere
looked ready to burst in a bikini at a Hawaii hotel on Nov 15. The 25-year-old actress is eight months along with her first child, but looks like she is ready to welcome her baby girl any day now!

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Panettiere is only 5'2" but said recently that she has gained nearly 40 pounds of baby weight during her pregnancy.

"I started out at 106 pounds and guess how much I weigh now? Around 145 pounds," the actress told Hello! magazine earlier this month. "And the worst part is that my feet are still size five and they're going, 'What's going on with all this weight?’ They're about to snap from underneath me with the strain."

PICS: Stars Who Took it ALL Off While Pregnant

Some of that size is undoubtedly due to the baby’s father, Ukranian heavyweight boxer Wladimir Klitschko. Nicknamed “Dr. Steel Hammer” in the boxing community, Panettiere's fiance is 6’6” and weighs in at 243 pounds.

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Hayden first confirmed her pregnancy in her ALS Ice Bucket Challenge video and since then, hasn't shied away from proudly posting baby bump pics like her Halloween costume!

PICS: Jill Duggar Dillard Shows Off Her Growing Baby Bump

Panettiere revealed that she was having a girl on the red carpet at the 2014 Emmy Awards. Check out the video below to see what she told ET’s Nancy O'Dell about preparing for her daughter’s arrival!