Hilary Duff and son Luca attend Broadway event in NYC: Photos

By Carson Blackwelder, Video by Will Linendoll & Brittany Berkowitz

Hilary Duff isn't just a regular mom --- she's a cool mom.

The "Lizzie McGuire" alum, 37, stepped out with her eldest child, her 12-year-old son Luca, in New York City on Dec. 12 for a Broadway event.

The mother-son duo were all smiles as they posed for photos at opening night of Second Stage Theatre's new play "The Cult of Love" at The Hayes Theater.

Bruce Glikas/WireImage via Getty Images

Luca Comrie and Hilary Duff pose at the opening night of Second Stage Theatre's new play "The Cult of Love" on Broadway at The Hayes Theater on Dec. 12, 2024 in New York City.

Duff shares Luca with her ex-husband, Mike Comrie.

Bruce Glikas/WireImage via Getty Images

Hilary Duff poses at the opening night of Second Stage Theatre's new play "The Cult of Love" on Broadway at The Hayes Theater on Dec. 12, 2024 in New York City.

The "So Yesterday" singer is also mom to daughters Banks, 6, Mae, 3, and 7-month-old Townes, all of whom she shares with husband Matthew Koma.

Duff recently shared a look inside her family life with an Instagram post of their Thanksgiving holiday adventures, which she captioned "thank the high heavens school is back in session."