Could it be "Fabulous" by Ashley Tisdale from the HSM2 soundtrack? She mentions her pink Prada tote.
Other than that, the only one I can think of is "Fashionista" by Jimmy James. My girls listened to this ad nauseum last summer. Here are some of the lyrics:
New York, London, Paris, Milan
Tokyo, I think it's in Japan
Asia, Malaysia, Las Vegas to play
LA, if you pay my way
Fashionista, how do you look?
Fashionista, how do you look?
Fashionista, how do you look?
Fashionista, how do you look?
(Who you wearing?)
Sean John, Calvin Klein
Donna Karan's fashion line
Valentino, YSL
Ferragamo and Chanel
Holsten, Gucci, Figla, Rucci
Don't forget my Pucci
Fendi and Armani
God, I miss Gianni
Kenneth Cole, Michael Korrs
Mr. Ford I can't afford
D&G and BCBG
Looking good is never easy
Alexander Perkovich
Naomi Campbell such a witch
I wanna be Delgada
To fit into my Prada
Oscar de la Renta
Louis Vuitton
Imitation of Christ, beauty has a price