Read on to find out whose hair is high shining and whose is falling flat, as the experts weigh in on how to get the best looks.
Want more hair styling tricks? Visit our hair care section for tips from the pros.
Celebrity Hair Hits and Misses
Fergie oversaturated her hair in what appears to be shine serum, creating an oil slick instead of a sleek shine. It also made her hair color look darker. According to the pros, one drop is all you need to add luster to extra long locks.
TIP: If you overdose on your favorite styling product and don't have time to rewash your hair, try applying dry shampoo. It instantly absorbs excess oil and product build-up so hair looks freshly shampooed.
TRY: Oscar Blandi Dry Shampoo Spray
Jun Sato, WireImage
This A-list actress gets an A-plus for hair. At the 2008 CMA Awards, Reese Witherspoon gave her classic bob a simple lift. "She added body and texture without looking overdone," says celebrity stylist Gina Bertolotti.
To get the look: apply a volumizer directly to the roots of damp hair and rough dry with a blow dryer. Set the hair with Velcro rollers and let sit for five minutes. Remove the rollers, flip head upside down and blast hair with a shot of cool air from the blow dryer. Using a large barrel curling iron, add a few curls for enhanced softness. Finish with hairspray.
Bryan Bedder, Getty Images
At the premiere of Australia, Nicole Kidman had a very bad hair day. Her loose chignon and two-toned hair color looked dated and added years to her usually stunning appearance.
Brad Barket, Getty Images
It was America the beautiful at the 2009 Screen Actors Guild Awards. Her sleek, side-swept ponytail was a red carpet head turner and the perfect complement to her strapless gown.
To get the look: If you have curly or textured hair, Bertolotti recommends applying a straightening balm to control frizz and ensure the hair stays smooth. Once applied, blow dry the hair straight, then use a two-inch barrel curling iron to flip the ends. Smooth on a drop of shine serum to tame flyaways and boost shine, then part the hair slightly off center and pull it back into a low ponytail.
Oscar Blandi Raffinata Hair Straightening Balm
http://oscarblandi.com/newproducts/purastraight.html
John Frieda Frizz-Ease Hair Serum
http://www.johnfrieda.com/products/product_detail.asp?productLine=frizz_ease&pid=52
Jason Merritt, Getty Images
It looks like Ashlee Simpson may be the only star whose hair stylist isn't on speed dial. While her cut is definitely cool, she's in desperate need of a trim. Her extra long bangs and stringy strands are hardly star quality.
Steve Granitz, WireImage
Jessica Biel was the mane attraction at an awards show in Beverly Hills. Her perfectly tousled locks looked effortlessly stylish. "It's such a versatile look," says Bertolotti. "You can wear this style to a formal event or with a pair of jeans."
To get the look: Apply hair gel to damp hair and blow dry. "Hair gel creates a great base when adding curls," says Bertolotti. Working with two-inch sections, spray the hair with hairspray, curl with a small barrel curling iron (about one inch), and spray with hairspray again. The hairspray is essential to help hold the curl, adds Bertolotti. When finished, gently shake the head to loosen the curl and hairspray for additional hold.
Phyto Sculpting Gel 8
http://www.phyto-usa.com/styling.asp
Suave Max Hold Unscented Hairspray
http://www.drugstore.com:80/products/prod.asp?pid=163424&catid=9589
Jason LaVeris, FilmMagic
At a gala in Washington, DC, Jennifer Lopez's elaborate updo looked like that of an 80s prom queen way too contrived. Had it been a little less labored and set further back on the head, she would have looked more modern, yet still glamorous enough for such a formal occasion.
Jason Kempin, Getty Images
Drew Barrymore took volume to a new and unflattering level. At the 2009 Golden Globe awards her hair looked ready for lift off, which made her face look tiny. A little less body (and flyaways) would have kept her hair and face in better proportion.
Steve Granitz, WireImage
Who else but Jennifer Aniston can pull off a French braid at an Oscar party? The star looked stunning in a simple, yet elegant style. "This look is a great way to keep your hair out of your face while still wearing it down," says Bertolloti. Plus, it works on the red carpet or a dinner out.
To get the look: Apply a wave enhancing spray to damp hair and allow to air dry for a naturally tousled effect. (You can also use a diffuser to create the same look in less time.) Grab a one-inch section of hair from the top front of the head that measure temple to temple. Apply a drop of styling cream to the section to control flyaways and hold the hair together while braiding. To French braid, pull small sections of hair from the face frame in and secure. If you can't French braid, Bertolotti says a regular braid secured to the head with bobby pins will create a similar effect.
Frederic Fekkai Luscious Curls Wave Spray
http://www.fekkai.com/products/luscious-curls/wave-spray
Bumble and bumble Styling Creme
http://www.bumbleandbumble.com/product/spp.tmpl?CATEGORY_ID=CAT74&PRODUCT_ID=214
Jason Merritt, Getty Images
It seems Sandra Bullock's hair stylist forgot to secure a few strands. Her hair looked messy and undone, not to mention a bit frizzy, at the All About Steve premiere.
Todd Williamson, WireImage