You know give a Lucy fan an incentive and they will find whatever they can :) Or I should say whatever we can! I love the internets.
Just got this note from Sofia!
Mrs. World 1989 - Parade of Nations video
I found a video from the Mrs. World 1989 competition Lucy Lawless was in on youtube.
At 4.03 in the video you can spot Lucy Lawless in the Mrs. World 1989 being announced wearing a white dress.