The TMZ tip line paid off again -- well, kinda sorta.
Someone sent an email to TMZ's "Contact Us," saying he had a bud in law enforcement who saw Perez Hilton in the slammer.
It took some digging and expert photography analysis -- but TMZ determined it was not Perez -- it was his "separated at birth" soul mate, Jason Davis!
Our tipper clearly wasn't the only one who's confused the two. Check it out.