What does Madonna really wanna be?

For a while, it was Marilyn Monroe. But now Hollywood's most visible chameleon has moved out of the '50s and into the late '60s, by way of the '70s. Specifically 1975, when her current beau Warren Beatty hit his celluloid peak, seducing all those magnificent women -- Julie Christie, Goldie Hawn, Lee Grant, and even Carrie Fisher -- in front of millions of hungry viewers in the '60s sexual farce "Shampoo."

In less than two hours last Sunday, here in Washington, Madonna appeared twice in "Shampoo"-esque styles. The first was when she stepped out of the black stretch limo for the opening of Beatty's "Dick Tracy" at the Uptown Theatre in a short black crushed-velvet number cut exactly like the swishy little mini-dress Goldie Hawn barely wears in the "Shampoo" party scene.

Then, about an hour later, on the giant screen of the Uptown, Madonna strutted and shimmered and cooed Sondheim as the mobster moll Breathless Mahoney in a dramatic high-neck, long-sleeve, body-hugging black-sequined dress with a sensuous cutout back, almost identical to the show-stopper Christie gets deliciously drunk in as a disgruntled lover in "Shampoo."

Is it coincidence? No word from Madonna -- or Beatty -- yet.

Perhaps the most curious question is: Why, 15 years later, is Christie so intoxicatingly inviting in that dress and Madonna is not?

Maybe it's because Christie has always had such a lovely style all her own. And Madonna no longer does. She's become merely a mirror of everyone else.