FLOWER POWER: Free-spirited actress Drew Barrymore made a time-honored hairdo fresh as a daisy for the '98 Oscars. She also sprinkled dirt in her shoes, calling herself a "human flowerpot."

MENSWEAR: Style-setter Keaton (at the Oscars) said she liked her slouchy Annie Hall-style clothes because "I feel most comfortable that way." Julia Roberts followed suit 14 years later at the Golden Globes.

CORNROWS: The style is rooted in Africa. But it took Derek in the movie 10—at the suggestion of her husband, John—to make it, briefly, a fad. "On Derek they were surprising," says Richard Martin, costume curator at the Metropolitan Museum of Art in Manhattan. Princess Stephanie took a while to catch the wave.

WRAP DRESS: Collins's version has shoulder pads and décolletage. "In the '70s, it was about power," explains Richard Martin. Paltrow's Diane Von Furstenberg "looks demure, almost wallflowery," he says.

HALTER TOP: "It was comfortable when was thinner and got a lot of sun," recalls Bissett. "I'm not surprised to see it back, as sports and exercise encourage people to show their bodies."

SEE-THROUGH: Although Barbra Streisand wore a sheer Scaasi ensemble to the '69 Oscars, the look was still "startling when Kim Basinger did it," says designer Todd Oldham. "It was a brave move. Today, probably the person to the right and to the left of Helen Hunt [at the L.A. Twister premiere] were dressed pretty much the same way."

BIG SUNGLASSES: DeGeneres's and Davis's Gucci goggles are "part of the '70s revival," says fashion expert Richard Martin. "Audrey Hepburn and Jackie made the look glam."

TUXEDOS: Ever since Marlene Dietrich put one on to seduce an audience back in the '30s, women have loved tuxedos. "Tatum was very influenced by Bianca Jagger, who was friendly with her father at the time," says Nolan Miller, who designed the youngest Oscar winner's tux. "Bianca wore pantsuits. Tatum was 10 going on 30. She wanted to be sexy. She thought it was a great look for evening." So, apparently, did Whoopi Goldberg, who wore an Armani to the Oscars—as host in '94.

PRINCESS COAT AND CAP: "It's timeless," says Nolan Miller. "You could put on Ali MacGraw's jacket today and people would say, 'What a great look.' " Still, Bessette Kennedy's jacket is thoroughly '90s. "The belt changes the whole proportion of the jacket," says Richard Martin. "It modernizes it."

OFF-THE-SHOULDER: "This is a platform for a beautiful face," says Todd Oldham of the classic that dates back to the cavewoman. "The shoulder strap has to be proportioned to draw attention to the face."

CROSS-YOUR-HEART DRESS: Garth calls her Emmy gown "retro." But O'Neill felt cutting-edge." thought it was unique," she says, "but it looked like it would be repeated—there are only so many places you can put straps."

OPEN COLLAR: Disco-dashing on Reeve, the chest-baring white shirt is premiere party attire for today's hotties (Pitt wore his to the Meet Joe Block opening, DiCaprio, to the Romeo & Juliet bash). "It's a sexy way to get by without wearing a formal getup," says Todd Oldham. "Cary Grant wore it. It's a great way to show off a great mug."

FEATHERS: Curator Richard Martin considers a feathery entrance "the epitome of Hollywood style. It shows how glamor never fades." Says Stevens: "I bought it right off a model at a fashion show. It was sexy and comfortable, and men loved it."

SILVER MESH: Lopez (in Paco Rabanne at the MTV Movie Awards) was carrying on a sex symbol tradition. "I liked it so much I bought another one," says Locklear of her chain-mail top. "Because it was metal, it was cold when you put it on, and then it warmed up from body heat. And it was fun to play with, like a Slinky." ("I don't want to discuss the hairdo," she adds. "It looks like I have a poodle on top.")

FUZZY SWEATER: That sweater is my favorite thing in my closet," says Swain. "It's the only thing that gets hung up." Bertinelli's top got hung up too. "It kept getting stuck on my lipstick," she says. "I'd wear the sweater again. But not the Sergio Valente jeans. Sorry, Sergio."

PEARLS: The former First Lady gave pearls new luster (and tripled sales for Kenneth Jay Lane, who designed her $150 fakes). Leoni's choker, made from her grandmother's pearls, is "the greatest gift I've ever gotten," she has said.

TIARA: Both women wore theirs to the Oscars. "I went as my idea of a '50s movie star," says Tomlin. "When I was a kid, that was my fantasy. Mr. Blackwell said the next day, And Lily Tomlin, we don't wear tiaras.' " Hayek shared the fantasy. "When is a girl going to wear a tiara," she asked, "if not to the Oscars?"

BALL GOWN: Stars have always dressed to be noticed. Midler explained to the Oscar audience that her cleavage-baring number allowed her "to rise to the occasion." Sarandon's hair color and bag perfectly matched her Dolce & Gabbana.

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