NBC's "The Tonight Show with Jay Leno" - Season 21

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THE TONIGHT SHOW WITH JAY LENO -- Episode 4388 -- Pictured: Actress... News Photo2010,Arrival,Arts Culture and Entertainment,Bestpix,Burbank,California,Celebrities,Choice,Colour Image,Full Length,Indoors,Jessica Simpson,Night,One Person,People,Portrait,Pregnant,Television Show,The Tonight Show with Jay Leno,Topix,USA,VerticalPhotographer Collection: NBCUniversal 2013 NBCUniversal Media, LLCTHE TONIGHT SHOW WITH JAY LENO -- Episode 4388 -- Pictured: Actress Jessica Simpson arrives on January 15, 2013 -- (Photo by: Paul Drinkwater/NBC/NBCU Photo Bank via Getty Images)