FOUR best friends * ONE priceless necklace * And an actress with TWO personalities...

For Lauren and her friends, living in a luxury London hotel definitely has its perks... Like getting to meet the glamorous Isabella Duval when the megastar checks into Mayfair Park's exclusive Ruby Suite.

But it seems that there are two sides to their famous guest.

Can the girls find out which is the real Isabella... and which is the act?