"Okay, now, who would like to have a complete make over . . . hair, clothes, make-up -- everything?" asked Mademoiselle magazine editor Lowell Amey over the microphone to the 500 or more women crammed last Saturday into the small junior area at Woodward & Lothrop in Wheaton Plaza.

All but a couple of hands shot up; a few arms almost stretched out of their sockets.

There are few young women with so much confidence about the way they look that they wouldn't like some expert help or reassurance. And those super-secure souls aren't likely to turn up at make-over session.

Chosen by Mademoiselle editors, with some help from hair and make-up specialists and photgrapher Doug Hopkins, were Howard University junior Camille Lamothe, 19, and Michael Ann Vaccaro, 22, a voice student and parttime Langley Park supermarket checker.

Vaccaro, who admitted, "My heart felt like it was going to pound right out of my chest when I was chosen," has kept to a simple skin-care regimen. Ivory soap for washing, a little blush, mascara, "a grand total of 10 minutes worth of care." And when her naturally curly hair seems out of control she heads for a haircut in Rockville.

John Viar of Glemby cut her hair, still emphasizing the natural curls, but shortening the back and shaping the front with more length. Cindy Peters of Elizabeth Arden added mascara to make the eyes seem more wide apart, a lot of cheek color, even up to the side of the eye area, and a bright lipstick.

Lamothe, who said she wears her hair differently each day according to her mood, also got the mascara and blusher treatment and her hair was cut with long bangs.

"Doesn't it make her look sexy?" Viar asked, prodding the audience for applause. "You'll have to have it cut every two weeks to keep it this length," he added. Lamothe didn't seem to mind.

For both make overs, broad-shoulder jackets wer chosen. Vaccaro's jacket was put over a slim pleated skirt and textured sweater, through which Mademoiselle editor Linda Branting stabbed an enamel hair chop for jewelry.

Lamothe's jacket was belted and paired with corduroy pants tucked into cowboy boots.

Vaccaro was delightd with her new appearance, though not totally sold on the bright lipstick. "You need a red lipstick to balance the other bright makeup colors, as well as the bright accents in the clothes," explained Peters.

About her make over, Lamothe proclaimed: "It's divine. Shorter hair is easier to take care of."

So what do you do with a totally made-over appearance? Vaccaro was heading right home to wash off the make-up. "I have to go to work tonight. And Giant just wouldn't understand.: