Since the Dreamgirls choreography harks back to 1960s R&B groups like the Supremes, Robinson needed the singer to check her frenetic prancing at the door. "Women back then weren't moving as much as they do now," she says. "They weren't moving their hips as much. It was all about the shoulders and slight arm movements."

Though the Dreamgirls star only attended Juilliard "for a minute," says Robinson, "he can dance! We were shooting this scene and I'm looking at the camera, and I'm like, 'Is [Jamie] doing Michael Jackson?' He forgot his step and went into his own thing!"

"She's a natural dancer," Robinson says. "She's like a ball of clay and you can just mold her." For the Black Eyed Peas' "My Humps," Robinson says the singer, not surprisingly wanted a video "about a girl and her butt, but no so over-the-top that it feels like 'Baby Got Back.'"

Working with the "Promiscuous" singer on the set of the video "was a little unnatural because it was the first song she hadn't written [all the lyrics to] herself. So we just got in front of the mirror and played the song over and over to find out what felt comfortable for her."

On the set of "These Boots Are Made for Walkin'," Robinson worked around Simpson's self-admitted lack of coordination (remember Newlyweds?) by "surrounding all the action around [her], so it looks good without [her] do too much."

Labels: Fatima Robinson