REMEMBER American Bandstand and rock 'n' rollers like Del Shadell, The Everly Brothers, Freddy (Boom Boom) Cannon, Fabian and Buddy Holly? How about Howdy Doody, Buffalo Bob and Clarabelle?

And Elvis, penny loafers, jacket clubs, letter sweaters, fJackie Robinson, Marilyn Monroe, drive-ins, chinos, rebels without causes, the jitterbug?

The '50s. Fascinaarticularly its at-once innocent and rebellious high-schoolers--continues, helped along, of course, by such mov and television's "Happy Days."

And now comes the '50s "sock hop," a popular party theme going into fall foh to have worn the original bobby sox and those too young to remember, but itching to recapture a moment.

D hop is like taking a big trip to an amusement park with gals in cotton-candy colors--sirens and inge'nues--and guys in rah-rah letter sweaters or rebel leather. All loading up on fries or pizza and rolling up their jeans for another ride on the Big Dipper.

Tk is to go first to your own closet and then fill in with such things as socks and chiffon scarves from the five and dime. And if you get stuck for authentic '50s garb, check the Yellow Pages under "Clothing Bought and Sold."

Some miscellaneous ideas for girls: the "tomboy look" with rolled-up short-sleeved sweater or blouse, Dad's shirt worn ouover rolled-up jeans with saddle shoes, loafers and white socks.

For boys: any football player gear, Hawaiige shirt, clip-on bow ties.

The point is to have fun in what you're wearing, without spending a fortune on t feels comfortable, not the one you think you should wear. Remember--whether you're 16 or 60--that you are, for adolescent. "Fly casual," as Han Solo says.

Here are four illustrations to get you started on re-dressing Remember, it is often the smallest detail--such as an ankle bracelet or cigarette pack tucked into a rolled-upes the difference.

And now can '60s protest parties be far behind?