Hayden Panettiere could not stop smiling as she hit Sunday’s Critics’ Choice Awards solo.

Clad in a peach Grecian gown with a keyhole cutout, the 26-year-old starlet looked happier and healthier than ever during her first red carpet appearance after being treated for postpartum depression last year.

After welcoming daughter Kaya with fiancé Wladimir Klitschko in December 2014, the “Nashville” actress checked into a rehab facility in October. She previously spoke of her struggle with postpartum during an appearance on “Live with Kelly and Michael” last year.

“When [you’re told] about postpartum depression, you think it’s ‘I feel negative feelings towards my child, I want to injure or hurt my child’ — I’ve never, ever had those feelings. Some women do. But you don’t realize how broad of a spectrum you can really experience that on,” she said. “It’s something that needs to be talked about. Women need to know that they’re not alone, and that it does heal.”

Following treatment, Panettiere first resurfaced in late November at the IBF IBO WBO World Heavyweight Championship Fight in Germany.

This article originally appeared in the New York Post's Page Six.