Beverly Hills, California - Macaulay Culkin and Brenda Song are reportedly engaged after recently welcoming their first son together.

Nine months after welcoming their baby Dakota - who was named after Culkin's late sister – the couple appear to have taken the next step.

On Monday, the Dolls star was spotted in Beverly Hills wearing a stunning diamond ring on her left hand.

A source confirmed the engagement to People on Wednesday.

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The ultra private couple began their four-year romance after meeting on the set of Changeland.

Though the lovebirds have kept their romance on the DL, they have each publicly spoken fondly of each other.

The Home Alone alum gushed about his partner during his interview with Joe Rogan on his podcast in 2018, saying at the time he wanted to "put some babies" in her.

"I have a pretty little family — a pretty girl, a pretty dog, a pretty cat, and all that stuff. We're gonna move. We're doing the house thing and all that kind of stuff," Culkin shared at the time.

In 2020, the Suite Life of Zack and Cody star wrote a sweet post for Macaulay on his 40th birthday.

"I could sit here and write endlessly about how wonderful, kind, loving, genuine, loyal, honest, brilliant and hilarious you are, and how grateful I am that I get to share and do this life thing with you," she wrote. "But firstly, that would take me an eternity and secondly, you won't even see this because you don't ever use Instagram. Hahaha. My unicorn that I never thought could exist, I am luckiest person in the world because I am loved by you."

Song was engaged to Trace Cyrus from 2011 to 2012, while Culkin was married to Rachel Miner from 1998 to 2002.

Congratulations to the happy couple!