Paris Hilton's Ex -- I'm On Top of the World!!

6/1/2010 8:45 PM PDT BY TMZ STAFF
Doug Reinhardt, aka Paris Hilton's ex-boyfriend, aka heir to the frozen burrito fortune, has left Hiltie in the dust -- cause he's datin' Miss World USA.


We've learned Doug has been spending "every night" for the past few weeks with Lane Lindell -- a beauty queen who's even getting a college education at the University of Georgia.

Paris will probably say, "She's so 2008."  And that's true.  Miss World USA 2008.