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InStyle's editorial guidelines Updated on June 1, 2010 @ 05:11PM Pin Share Tweet Email Photo: PacificCoastNews.com Easy Summer Hairstyles 01 of 08 Undone Pony Angela Weiss/WireImage WHO'S WEARING IT Jessica Biel WHAT MAKES IT COOL Volume at the crown combined with loose, face-framing layers give this ponytail a sexy '60s-bombshell feel. "It has a modern shape that?s chic but effortless-looking," says Jessica Biel?s stylist, Adir Abergel. GET IT (DON'T SWEAT IT!)1. Spritz texturizing spray on damp hair and let air-dry (this style also works well on the naturally gritty texture of hair that hasn?t been washed in a day).2. Back-comb lightly at the crown for lift.3. Pull into a ponytail at ear level and secure with an elastic.4. Loosen pieces around the face. 02 of 08 Soft Tendrils Charles Eshelman/FilmMagic WHO'S WEARING IT Leighton Meester WHAT MAKES IT COOL It's featherlight and touchably delicate. ?It took no time-we wanted it messy and soft,? says Meester?s stylist Charles Baker Strahan. GET IT (DON'T SWEAT IT!)1. Wash hair in the morning and later spray with dry shampoo for extra volume.2. Tightly spiral small sections with a 1-inch curling iron.3. Brush through to loosen. 03 of 08 Textured Bob Adam Gold/iPhoto WHO'S WEARING IT Jessica Alba WHAT MAKES IT COOL It doesn?t get much sexier than loose, tousled waves. One warning: ?Keep the look natural and not too big, or it could look a little '80s,? says Alba?s stylist Robert Ramos. GET IT (DON'T SWEAT IT!)1. Spray wet hair with leave-in conditioner and volumizer (that's what gives it the salt-soaked vibe).2. Dry the hair with a diffuser. 3. Finger-comb through strands with a dab of texturizing cream. "A brush will leave the style flat,? says Ramos.4. Finish with a light mist of hairspray. 04 of 08 Ballerina Bun John Shearer/Getty WHO'S WEARING IT Anna Kendrick WHAT MAKES IT COOL Sleek in the front, texured in the back-and a lot easier than it looks. ?It's a sophisticated updo that emphasizes the cheekbones,? says Tresseme stylist Craig Gangi, who created the look. GET IT (DON'T SWEAT IT!)1. Apply anti-frizz cream to damp strands and blow dry straight.2. Pull hair into a high ponytail, secure with an elastic.3. Twist strands around the base of the ponytail, pinning as you go. 4. Tease along the bottom of the bun to keep it from feeling too prim. 05 of 08 Loose Spirals Charles Eshelman/FilmMagic WHO'S WEARING IT Emmy Rossum WHAT MAKES IT COOL It's incredibly versatile. Wear it clipped to the side like Rossum, or woven into a loose braid. "If you've been working all day, twist a section back and it's an instant night look," says her stylist Frank Galasso. GET IT (DON'T SWEAT IT!)1. Work a dab of de-frizzing cream into damp hair and blow 85 percent dry. (You don't want your hair too stick straight.)2. Part on the side and wrap random sections around a 1 1/4-inch curling iron. "For more modern results, don't use the barrel's clip," says Galasso.3. Twist and pin waves to the side. 06 of 08 Beachy Waves Francis Specker/Landov WHO'S WEARING IT Diane Kruger WHAT MAKES IT COOL Deconstructed waves seem relaxed and easy, yet still dressed-up. ?This look is shake, spray, shake some more and out the door,? says Kruger's stylist Richard Marin. GET IT (DON'T SWEAT IT!)1. Spray hair with texturizer.2. Flip head over and partially dry strands with a diffuser. (?Do not run your fingers through your hair-it will frizz,? warns Marin.)3. Curl with a mix of heated rollers and a curling iron.4. Shake head to tousle the waves.5. Spritz hair with dry shampoo for added texture. 07 of 08 Fishtail Braid Nick Harvey/WireImage WHO'S WEARING IT Leona Lewis WHAT MAKES IT COOL The intricacy of the fishtail is a fun twist on the side-braid trend, says Lewis's stylist Ben Cooke. GET IT (DON'T SWEAT IT!)1. Pull hair to one side, but don?t secure. 2. Divide into two even pieces. 3. Take a small section of hair from under one of the pieces and wrap it over that section and under the other. 4. Repeat, alternating sides through the length of the ponytail. 5. Secure with a clear band, then gently massage braid to pull out stray strands. 08 of 08 Updo with Headband PacificCoastNews.com WHO'S WEARING IT Taylor Swift WHAT MAKES IT COOL A basic headband dresses up a low pony and camouflages frizz on humid days. ?Every girl should keep one in her purse. It will instantly pull your look together,? says Swift?s stylist, Enzo Angeleri. GET IT (DON'T SWEAT IT!)1. Warm a dollop of curl cream between your palms and run them through damp strands.2. Blow dry with a diffuser 60 percent of the way.3. Pull curls into a ponytail, leaving tendrils loose (for a night-time look, pull hair into a high bun suggests Angeleri).4. Pull on a headband so it rests along the highest plane of your forehead.