Stars spring up in SoHo

Saturday's springtime weather brought out the crowds to SoHo -- and the celebs.

Wearing a denim jacket (a surefire sign of the seasonal shift), Jonah Hill strolled eastward along Prince Street with a male pal around 1:30 p.m.

Model of the moment Cara Delevigne was nearby on Spring Street a little later in the afternoon, making her way through the crowd near the intersection at Broadway.

Over at Equinox's SoHo outpost, Tony nominee David Harbour, also of "The Newsroom," picked up a smoothie at the juice bar, where amNewYork was grabbing our own fruit shake.

Meanwhile, on Friday, Brian Austin Green took baby Noah, in his stroller, out for a walk in SoHo sans wife Megan Fox.