Trivia: When everyone is marching on Washington near the end, have a look at Emmet. According to the DVD commentary, the filmmakers forgot that he had to be part of the march, so they had to add him digitally in post production.
Trivia: In the opening scene, when the girls are flipping through a photo album they've made for Elle, they get to a picture of her with Sally Field, and one of them remarks, "I like them, I really like them." When Sally Field won her Oscar, she said, "You like me, you really like me."
Trivia: When Elle goes to work in Washington D.C., She wears a pink outfit reminiscent of First Lady Jackie Kennedy. When her boyfriend broke up with her at the start of the first movie, he said that he needed "to marry a Jackie, not a Marilyn."
When Elle wakes up in her hotel, she looks out the window. Just a moment before, there was a speed-time shot of the sun rising; however, when she's looking out the window and talking in standard time, the sun's reflection is still moving awful fast.