Credit: AP Photo/Jennifer Graylock

Hollaback boy!

On Thursday, Gwen Stefani had a very special date at her L.A.M.B. fashion presentation for New York's Fashion Week: son Zuma Nesta Rock Rossdale!

Nearly 18 months, Zuma took after his rocker-designer mommy by sporting a leather jacket and faded denim jeans. (See more cute pics of Zuma here!)

Stefani, 40, played with Zuma before her line's presentation began, and explained to reporters that she and Zuma were together in the Big Apple "for the week" while her husband Gavin Rossdale and older son Kingston stayed behind in L.A. "I can't wait to come back to L.A. and spend time with them!" she cooed.

Zuma's fashion-forward baby gear mirrors the style of his older brother Kingston, 3, who has famously rocked a mohawk, shredded jeans and other punk-inspired looks.

At the party for L.A.M.B. (Love, Angel, Music, Baby) at Milk Studios, Stefani explained to UsMagazine.com that Kingston doesn't rely solely on her for her fashion choices. "It depends," she told Us. "He has moments!"