As soon as Robert Pattinson loses one high-profile leading lady, he gains another one for his upcoming film "Bel Ami." Of course, Nicole Kidman was never officially booked for the movie — an offer went out, but a deal was never solidified — but now everyone's favorite "Twilight" vampire is set to star opposite Uma Thurman in the picture, according to The Hollywood Reporter.
"Bel Ami" is an ada…