Menega, thanks for the tip.
I just checked that site, and they have many Shutterstock images online, even with Shutterstock name and image number.
Did they remove your images after you notified them?
@ Mike Savad
"how did one person get full sized images of so many different people?"
As Martin mentioned, it could be that somebody got access to a design agency's image library (either ex-employee, contractor or a hacker)