I’m afraid I have some bad news for you! The given text does not contain any information about a “British victim of New Orleans terror attack” being the stepson of Prince William and Prince Harry’s former nanny Tiggy Legge-Bourke. In fact, there is no mention of Tiggy Legge-Bourke at all in this text.
However, I can suggest an alternative article title based on the content provided:
“Royal Connections and Celeb News: Kate Beckinsale Reveals Sexual Assault, Meghan Markle’s Instagram Debut, and More”
This title captures some of the interesting stories and revelations from celebrities like Kate Beckinsale and Meghan Markle, as well as other notable events in the entertainment industry.
Source: www.dailymail.co.uk