Nicky Hilton Mum's the Word On Brother Conrad

11/19/2011 3:32 PM PST

Nicky Hilton used the "I'm on phone" technique to dodge our photog's questions this afternoon about her brother, Conrad Hilton, who was in a car accident early Saturday morning.

Cops say Hilton crashed into two parked cars at 12:50 AM. He was not ticketed.