Credit: Ture Lillegraven/GQ; Jon Kopaloff/FilmMagic

He's not baring all in Playgirl magazine, but Levi Johnston is exposing an impressive new personal style in the spotlight.

The Wasilla, Alaska father -- whose son with Sarah Palin's daughter, Bristol, was born last December -- ditched his hunting gear for sleeker duds at Wednesday's GQ Men of the Year party in Los Angeles. (He wore high-end label Theory.)

"I'm 19 years old, and I've never done anything but hunt and fish and camp," Johnston said in GQ's July issue, for which he posed shirtless with his baby, Tripp.

Johnston, who also attended Us' Hot Hollywood party Wednesday, says he's starting to feel more comfortable in the spotlight.

"I'm still getting used to [red carpets] but I'm having fun with it," he told at the GQ party.

What does he make of his ex's mom, former Alaska governor Palin, calling him "Ricky Hollywood" during a recent interview with Oprah Winfrey?

"Whatever makes her sleep at night," Johnston told Us. "It was a joke a long time ago and I guess she's a little slow. So it took her this long to figure it out."