In this picture from The Simpsons episode "Little Big Girl," Bart is seen with his new (and pregnant) girlfriend, guest star Natalie Portman.
Twentieth Century Fox
Picture of Bart Simpson and Natalie Portman on The Simpsons "Little Big Girl."
In The Simpsons episode "Little Big Girl," Bart falls for guest star Natalie Portman, a girl from another town. But Bart mistakenly belives he impregnates her by kissing her.