Justine had the good fortune of being exposed to a select group of Olympians when she began her riding career at the young age of 3.  First with Captain Mark Philips, Olympic Gold Medalist '72, in Jamaica at St. Ann's Polo Club, then with veteran Olympic show jumper David Broome in Wales (Olympic Bronze Medalists '60 & '68). She continued with her junior career in Chicago, Tokyo and Colorado before operating Hunters Bluff Farm in New Orleans, where she trained under Chris Kappler (Olympic Silver medalist) from Hunterdon Farms, who supplied and supported her Grand Prix career where she competed successfully in both hunter and Jumper rings.