Splash News and Picture Agency ("Splash News") is suing Jessica Simpson, alleging that she infringed the news agency's copyright by posting one of the agency's photos on Instagram and Twitter without permission. 

Splash News alleged that it had licensed the rights to the photo to The Daily Mail, but not to Simpson.  The Daily Mail alleged that Simpson (or someone acting on her behalf) took the photo and posted it to her social media accounts.  

This lawsuit is a great reminder that just because a photo has been posted online, it doesn't necessarily mean that it's free to be used by others.