There's a new Princess Diana exhibition in Las Vegas. It has over 700 items, many of which have never been seen by the public.

Getty Images/Princess Diana: A Tribute Exhibition

• "Princess Diana: A Tribute Exhibition" opened in Las Vegas earlier this month.
• It features more than 700 artifacts from the life of the royal who died 25 years ago.
•  The collection includes a handwritten invitation to Prince Harry's 4th birthday party.

The new exhibition has over 700 items from Princess Diana

A new exhibition...