WATCH: Lourdes Takes the Fashion Reins from Mom Madonna

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Lourdes Leon, Madonna's daughter, and It girl Kelly Osbourne are making waves in the fashion world.  Kelly was recently chosen as the new muse for Lourdes and Madonna's latest Material Girl collection only available at Macy's, taking over for the controversial Taylor Momsen.

Though the juniors fashion line is a joint collaboration between mother and daughter, Madonna has made it no secret that Material Girl's designs are almost exclusively Lourdes's, with little input from the icon herself. And 14-year-old Lourdes's fashion savvy is obvious, as cameras caught her clearly hands-on in the design and styling process from start to finish, even jumping in to help Kelly with her jewelry during their New York fashion shoot.

"She trips me out because its not like talking to a 15-year-old," Kelly says of the super stylish Lourdes. "It makes me feel like there's something wrong with me, that I was not that smart when I was her age at all," Kelly laughs.

According to Lourdes, Material Girl has been successful because of its ability to adapt to the times.

"Fashion like a year ago, [it] has changed so fast," Lourdes says about the trendy line. "It's not the same as it was and my style has changed ... it kind of moves with fashion."

Check out the video to see Lourdes and Kelly in fashion action, as well as an appearance from the original "Material Girl" herself, Madonna.