Australian model Kristy Hinze-Clark is a new mum after giving birth to her second child.

The 34 year old and her Texan computer guru husband Jim Clark were in New York for the birth on Tuesday (19Aug14).

Little Harper is the couple's second daughter - Dylan was born three years ago (11).

Kristy broke the happy news on, posting, "Elated to announce the birth of our 2nd daughter Harper. August 19, 2014 we are happy and healthy and completely in love."

The newborn arrives just months after her dad celebrated his 70th birthday with family and celebrity friends in the Dominican Republic.