Adult film star Stormy Daniels is suing President Donald Trump over a so-called "hush agreement".
Daniels claims she and Mr Trump had an affair starting in 2006, but he denies the allegations.
So why is this story important? And what do you need to know?
Who is Stormy Daniels?
Stormy Daniels was born Stephanie Clifford in Louisiana in 1979.
She moved into the adult film industry first as a performer, before in 2004 branching out into directing and also writing.
Her stage name, Stormy Daniels, comes from Mötley Crüe's bassist Nikki Sixx's daughter Storm, and the US whisky Jack Daniels - which southerner Ms Clifford chose after reading an ad calling the drink "a Southern favourite".
