HOLLYWOOD, Calif. — Seth Green is ready to become a Family Guy.

The 36-year-old actor is now engaged to his longtime girlfriend, model-actress Clare Grant.

"Yeah, we did it!" Green told E! News at Wednesday night's Hollywood launch party for Tarina Tarantino's new cosmetics line.

The Austin Powers star was tight-lipped about the proposal, but a friend told E! News that the couple got engaged on New Year's Eve and plan to get hitched this May.

Green is the executive producer and co-creator of Robot Chicken, an animated series for which Grant does voice-overs. He'll next appear in Disney's Mars Needs Moms.

Grant, 30, currently stars in the MTV series $5 Cover, which revolves around the Memphis music scene. The University of Memphis graduate has also appeared in such films as 2006's Black Snake Moan.