Kidman appeared on the red carpet Thursday night celebrating Francisco Costa's 10th anniversary as the women's creative director of the Calvin Klein Collection.
Earlier, she was outside the Carlyle Hotel when she was hit by a bicyclist. She was knocked to the ground, but in an interview with the Associated Press at the Calvin Klein event, she said she was okay.
Kidman added: "I'm up, I'm walking around, but I was shaken."
The New York Police Department says a 19-year-old bicyclist was issued three summonses for riding a bike on the sidewalk, riding a bike with no helmet and reckless endangerment.
TMZ.com identified the cyclist as freelance paparazzo Carl Wu.
Humberto Carreno / Startraks