Flurrie's Necklace

Flurrie's necklace is a plain pearl necklace that she can't be seen without. In Paper Mario: The Thousand Year Door, Flurrie loses this somewhere in Boggly Woods, and the Shadow Sirens find and steal it. Mario must defeat them in order to get the necklace, then he has to bring it back to Flurrie so she'd join his team.