The Best Jailhouse Transformation Ever

It was the precinct edition of "Extreme Makeover."

After a Post photographer snapped Rudy Giuliani's dowdy daughter in cuffs outside the cosmetics store she was accused of looting, she asked cops if she could put on a little makeup, sources said.

Four hours and a wardrobe change later, Caroline Giuliani stepped out of a Manhattan station house, her blond hair brushed out, her sleeves stylishly rolled up, ready for her New York cover shoot.

"It will probably go down in history as the best jailhouse transformation ever," said Khalilah Williams-Webb, a celebrity stylist who has outfitted such stars as hoopster Carmelo Anthony.

When cops outfitted her with locking bracelets at an Upper East Side Sephora store, she was wearing a purple T-shirt emblazoned with the letters NYU, for New York University.

But when she emerged from the 19th Precinct lockup with her mother, Donna Hanover, Caroline, a Harvard senior, was wearing a crimson sweatshirt from her Ivy League school with what appears to be a Harvard shirt underneath.

Sources said that after Caroline was processed, she went alone into a women's bathroom on the first floor with a bag that held the sweatshirt and her makeup. She came out 15 minutes later looking like a different person.