As they walked to a friend's house in Malibu with their parents Gavin Rossdale and Gwen Stefani yesterday, the pair wore matching Easter bunny vests over their shorts and T-shirts.
Kingston, who turns four next month, toughened up his cutesy top with a Stella McCartney for Gap military jacket, fake tattoo on his shoulder,and a straw hat.
His 18-month-old brother was equally stylish in over-the-knee striped socks, clutching a cuddly monkey.
Proud mother Gwen showed where her sons get their fashion nous - in an all-black ensemble, livened up with her favourite red lipstick.
And as the half-brothers of model Daisy Lowe, the daughter of their Bush star father, it seems fashion may be in their blood.
In an interview last month, Gwen told how her sons had completely different personalities.
'Kingston didn’t like the fans on tour [with No Doubt],' she told Access Hollywood. 'He doesn’t like having his photo taken or the paparazzi.'
Dressed to impress Gwen's sons Zuma and older brother Kingston wore Easter bunny shirts
And monkey came too: Zuma shows off his favourite accessory - his cuddly toy
Zuma is more of a show-off. He wants everyone to watch him, and he’s a goofball, and he’s really silly. He’s a funny guy.'
Husband Gavin echoed her when describing the type of toys their son enjoyed. 'A lot of little trucks... and squeaky shoes.
'Zuma likes squeaky shoes. We just took him to get a pair the other day. He likes when they go "squeak, squeak, squeak".'