Monthly Moron for April 2009

Which one of these Blondes career's will be revealed to be an elaborate April fools joke?
© 
Toglenn at en.wikipedia [CC BY-SA 3.0 (http://creativecommons.org/licenses/by-sa/3.0) or GFDL (http://www.gnu.org/copyleft/fdl.html)], via Wikimedia Commons
40% Heidi Montag
Heidi Montag
© 
By Peter Schäfermeier of Universal Photo (Own work) [CC BY-SA 2.5 (http://creativecommons.org/licenses/by-sa/2.5)], via Wikimedia Commons
40% Paris Hilton
Paris Hilton
© 
By Eva Rinaldi (Tara Reid) [CC BY-SA 2.0 (http://creativecommons.org/licenses/by-sa/2.0)], via Wikimedia Commons
20% Tara Reid
Tara Reid