Pregnant Hayden Panettiere posed with fellow mom-to-be Holly Williams at the Music City Food and Wine Festival's Harvest Night in Nashville on Sept. 20 Credit: Rick Diamond/Getty Images for Music City Food + Wine Festival

Music City mama-to-be in the house! Hayden Panettiere, who's pregnant and expecting her first child (a baby girl) with fiance Wladimir Klitschko, positively glowed at the Music City Food and Wine Festival's Harvest Night in Tennessee on Saturday, Sept. 20.

The Nashville star, 25, covered up her growing baby bump in a flowy printed camisole, which she paired with stretchy blue pants. Her blonde hair was pulled back into a messy bun, showcasing her naturally luminous face and big smile.

Also at the festival were Kings of Leon rockers Nathan and Caleb Followill (who helped curate the event), Inside Llewyn Davis actor Garrett Hedlund, and Panettiere's Nashville costar Clare Bowen, who posed for a picture with the pregnant Heroes alum. At some point in the night, the mom-to-be caught up with country singer and scion Holly Williams, too, who is expecting a baby with husband Chris Coleman.

Williams — granddaughter of the legendary Hank Williams Sr., and daughter of Hank Jr. — showed off her growing baby bump in a black knit top and distressed jeans. She and Panettiere posed belly-to-belly at the festival, which featured local dishes from Nashville's culinary scene.

Us Weekly broke the news of Panettiere's pregnancy in May. Speaking about the experience on the Emmys red carpet in August, she joked that it was difficult "making sure that [her bump is] tucked away."

"My feet get sore when I'm wearing no shoes. I've never felt this amount of weight on me," she said at the time, adding that pregnancy had "accentuated" her craving for chicken noodle soup. "I'm thrilled," she said. "I can't wait for her to come out."