Former “Malcom in the Middle” star Frankie Muniz is all grown up… And, he’ll be walking down the aisle in the near future.

The 25-year-old half-Puerto Rican actor, who was once called one of Hollywood’s most bankable teens, popped the question to his longtime girlfriend Elycia Marie Turnbow. Her response: Yes!

“After 4 years together, I’m so happy to be ENGAGED to the love of my life @ElyciaMarie!!!” the actor-turned-racecar-driver  announced on his Twitter account on Saturday.

“It’s official.. I’m engaged!” Turnbow, a publicist, also Tweeted the same day.

No word on whether the pair has set a wedding date yet.